diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Controllers/AdminController.cs b/src/Orchard.Web/Modules/Orchard.Themes/Controllers/AdminController.cs
index d3597c7f5..6bf7988ee 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/Controllers/AdminController.cs
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Controllers/AdminController.cs
@@ -5,6 +5,7 @@ using System.Web;
 using System.Web.Mvc;
 using Orchard.Data.Migration;
 using Orchard.DisplayManagement;
+using Orchard.Environment.Descriptor.Models;
 using Orchard.Environment.Extensions;
 using Orchard.Environment.Features;
 using Orchard.Localization;
@@ -18,11 +19,11 @@ using Orchard.UI.Notify;
 namespace Orchard.Themes.Controllers {
     [ValidateInput(false)]
     public class AdminController : Controller {
-        private readonly IThemeManager _themeManager;
-        private readonly IFeatureManager _featureManager;
         private readonly ISiteThemeService _siteThemeService;
         private readonly IPreviewTheme _previewTheme;
         private readonly IExtensionManager _extensionManager;
+        private readonly ShellDescriptor _shellDescriptor;
+        private readonly IThemeService _themeService;
         private readonly IDataMigrationManager _dataMigrationManager;
         private readonly IReportsCoordinator _reportsCoordinator;
 
@@ -36,27 +37,38 @@ namespace Orchard.Themes.Controllers {
             IPreviewTheme previewTheme,
             IAuthorizer authorizer,
             INotifier notifier,
-            IExtensionManager extensionManager) {
+            IExtensionManager extensionManager,
+            ShellDescriptor shellDescriptor,
+            IThemeService themeService) {
             Services = services;
             _dataMigrationManager = dataMigraitonManager;
             _reportsCoordinator = reportsCoordinator;
-            _themeManager = themeManager;
-            _featureManager = featureManager;
             _siteThemeService = siteThemeService;
             _previewTheme = previewTheme;
             _extensionManager = extensionManager;
+            _shellDescriptor = shellDescriptor;
+            _themeService = themeService;
             T = NullLocalizer.Instance;
         }
 
-        public IOrchardServices Services{ get; set; }
+        public IOrchardServices Services { get; set; }
         public Localizer T { get; set; }
 
         public ActionResult Index() {
             try {
-                var themes = _extensionManager.AvailableExtensions().Where(d => d.ExtensionType == "Theme");
                 var currentTheme = _siteThemeService.GetSiteTheme();
                 var featuresThatNeedUpdate = _dataMigrationManager.GetFeaturesThatNeedUpdate();
-                var model = new ThemesIndexViewModel { CurrentTheme = currentTheme, Themes = themes, FeaturesThatNeedUpdate = featuresThatNeedUpdate };
+
+                var themes = _extensionManager.AvailableExtensions()
+                    .Where(d => d.ExtensionType == "Theme")
+                    .Select(d => new ThemeEntry {
+                        Descriptor = d,
+                        NeedsUpdate = featuresThatNeedUpdate.Contains(d.Name),
+                        Enabled = _shellDescriptor.Features.Any(sf => sf.Name == d.Name)
+                    })
+                    .ToArray();
+
+                var model = new ThemesIndexViewModel { CurrentTheme = currentTheme, Themes = themes };
                 return View(model);
             }
             catch (Exception exception) {
@@ -112,8 +124,7 @@ namespace Orchard.Themes.Controllers {
                 if (!Services.Authorizer.Authorize(Permissions.ApplyTheme, T("Couldn't enable the theme")))
                     return new HttpUnauthorizedResult();
 
-                // feature id always == extension id, in this case
-                _featureManager.EnableFeature(themeName);
+                _themeService.EnableThemeFeatures(themeName);
             }
             catch (Exception exception) {
                 Services.Notifier.Error(T("Enabling theme failed: " + exception.Message));
@@ -127,8 +138,7 @@ namespace Orchard.Themes.Controllers {
                 if (!Services.Authorizer.Authorize(Permissions.ApplyTheme, T("Couldn't disable the current theme")))
                     return new HttpUnauthorizedResult();
 
-                // feature id always == extension id, in this case
-                _featureManager.DisableFeature(themeName);
+                _themeService.DisableThemeFeatures(themeName);
             }
             catch (Exception exception) {
                 Services.Notifier.Error(T("Disabling theme failed: " + exception.Message));
@@ -141,6 +151,8 @@ namespace Orchard.Themes.Controllers {
             try {
                 if (!Services.Authorizer.Authorize(Permissions.ApplyTheme, T("Couldn't set the current theme")))
                     return new HttpUnauthorizedResult();
+
+                _themeService.EnableThemeFeatures(themeName);
                 _siteThemeService.SetSiteTheme(themeName);
             }
             catch (Exception exception) {
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
index 72e4baa20..6f349ce98 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
@@ -86,7 +86,7 @@
     <Compile Include="Services\SafeModeThemeSelector.cs" />
     <Compile Include="Services\SiteThemeSelector.cs" />
     <Compile Include="Services\SiteThemeService.cs" />
-    <Compile Include="Services\ThemeManager.cs" />
+    <Compile Include="Services\ThemeService.cs" />
     <Compile Include="ViewModels\ThemesIndexViewModel.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Services/ThemeService.cs b/src/Orchard.Web/Modules/Orchard.Themes/Services/ThemeService.cs
new file mode 100644
index 000000000..1441c7058
--- /dev/null
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Services/ThemeService.cs
@@ -0,0 +1,208 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web.Routing;
+using JetBrains.Annotations;
+using Orchard.Environment.Descriptor;
+using Orchard.Environment.Descriptor.Models;
+using Orchard.Environment.Extensions;
+using Orchard.Environment.Extensions.Models;
+using Orchard.Environment.Features;
+using Orchard.Localization;
+using Orchard.Logging;
+using Orchard.ContentManagement;
+using Orchard.Themes.Models;
+
+namespace Orchard.Themes.Services {
+    public interface IThemeService : IDependency {
+        void DisableThemeFeatures(string themeName);
+        void EnableThemeFeatures(string themeName);
+    }
+
+    [UsedImplicitly]
+    public class ThemeService : IThemeService {
+        private readonly IExtensionManager _extensionManager;
+        private readonly IFeatureManager _featureManager;
+        private readonly IEnumerable<IThemeSelector> _themeSelectors;
+
+        private readonly IWorkContextAccessor _workContextAccessor;
+        private readonly ShellDescriptor _shellDescriptor;
+        private readonly IOrchardServices _orchardServices;
+        private readonly IShellDescriptorManager _shellDescriptorManager;
+
+        public ThemeService(
+            IShellDescriptorManager shellDescriptorManager,
+            IExtensionManager extensionManager,
+            IFeatureManager featureManager,
+            IEnumerable<IThemeSelector> themeSelectors,
+
+            IWorkContextAccessor workContextAccessor,
+            ShellDescriptor shellDescriptor,
+            IOrchardServices orchardServices) {
+            _shellDescriptorManager = shellDescriptorManager;
+            _extensionManager = extensionManager;
+            _featureManager = featureManager;
+            _themeSelectors = themeSelectors;
+
+            _workContextAccessor = workContextAccessor;
+            _shellDescriptor = shellDescriptor;
+            _orchardServices = orchardServices;
+            Logger = NullLogger.Instance;
+            T = NullLocalizer.Instance;
+        }
+
+        public Localizer T { get; set; }
+        public ILogger Logger { get; set; }
+
+
+
+        private bool AllBaseThemesAreInstalled(string baseThemeName) {
+            var themesSeen = new List<string>();
+            while (!string.IsNullOrWhiteSpace(baseThemeName)) {
+                //todo: (heskew) need a better way to protect from recursive references
+                if (themesSeen.Contains(baseThemeName))
+                    throw new InvalidOperationException(T("The theme \"{0}\" was already seen - looks like we're going around in circles.", baseThemeName).Text);
+                themesSeen.Add(baseThemeName);
+
+                var baseTheme = _extensionManager.GetExtension(baseThemeName);
+                if (baseTheme == null)
+                    return false;
+                baseThemeName = baseTheme.BaseTheme;
+            }
+
+            return true;
+        }
+
+        public void DisableThemeFeatures(string themeName) {
+            var themes = new Queue<string>();
+            while (themeName != null) {
+                if (themes.Contains(themeName))
+                    throw new InvalidOperationException(T("The theme \"{0}\" is already in the stack of themes that need features disabled.", themeName).Text);
+                var theme = _extensionManager.GetExtension(themeName);
+                if (theme == null)
+                    break;
+                themes.Enqueue(themeName);
+
+                themeName = !string.IsNullOrWhiteSpace(theme.BaseTheme)
+                    ? theme.BaseTheme
+                    : null;
+            }
+
+            while (themes.Count > 0)
+                _featureManager.DisableFeatures(new[] { themes.Dequeue() });
+        }
+
+        public void EnableThemeFeatures(string themeName) {
+            var themes = new Stack<string>();
+            while(themeName != null) {
+                if (themes.Contains(themeName))
+                    throw new InvalidOperationException(T("The theme \"{0}\" is already in the stack of themes that need features enabled.", themeName).Text);
+                themes.Push(themeName);
+
+                var theme = _extensionManager.GetExtension(themeName);
+                themeName = !string.IsNullOrWhiteSpace(theme.BaseTheme)
+                    ? theme.BaseTheme
+                    : null;
+            }
+
+            while (themes.Count > 0)
+                _featureManager.EnableFeatures(new[] {themes.Pop()});
+        }
+
+        private bool DoEnableTheme(string themeName) {
+            if (string.IsNullOrWhiteSpace(themeName))
+                return false;
+
+            //todo: (heskew) need messages given in addition to all of these early returns so something meaningful can be presented to the user
+            var themeToEnable = _extensionManager.GetExtension(themeName);
+            if (themeToEnable == null)
+                return false;
+
+            // ensure all base themes down the line are present and accounted for
+            //todo: (heskew) dito on the need of a meaningful message
+            if (!AllBaseThemesAreInstalled(themeToEnable.BaseTheme))
+                return false;
+
+            // enable all theme features
+            EnableThemeFeatures(themeToEnable.Name);
+            return true;
+        }
+
+        public ExtensionDescriptor GetRequestTheme(RequestContext requestContext) {
+            var requestTheme = _themeSelectors
+                .Select(x => x.GetTheme(requestContext))
+                .Where(x => x != null)
+                .OrderByDescending(x => x.Priority);
+
+            if (requestTheme.Count() < 1)
+                return null;
+
+            foreach (var theme in requestTheme) {
+                var t = _extensionManager.GetExtension(theme.ThemeName);
+                if (t != null)
+                    return t;
+            }
+
+            return _extensionManager.GetExtension("SafeMode");
+        }
+
+        /// <summary>
+        /// Loads only installed themes
+        /// </summary>
+        public IEnumerable<ExtensionDescriptor> GetInstalledThemes() {
+            return GetThemes(_extensionManager.AvailableExtensions());
+        }
+
+        private IEnumerable<ExtensionDescriptor> GetThemes(IEnumerable<ExtensionDescriptor> extensions) {
+            var themes = new List<ExtensionDescriptor>();
+            foreach (var descriptor in extensions) {
+
+                if (!string.Equals(descriptor.ExtensionType, "Theme", StringComparison.OrdinalIgnoreCase)) {
+                    continue;
+                }
+
+                ExtensionDescriptor theme = descriptor;
+
+                if (!theme.Tags.Contains("hidden")) {
+                    themes.Add(theme);
+                }
+            }
+            return themes;
+        }
+
+        private static string TryLocalize(string key, string original, Localizer localizer) {
+            var localized = localizer(key).Text;
+
+            if ( key == localized ) {
+                // no specific localization available
+                return original;
+            }
+
+            return localized;
+        }
+
+        private bool IsThemeEnabled(ExtensionDescriptor descriptor) {
+            return (descriptor.Name == "TheAdmin" || descriptor.Name == "SafeMode") ||
+                _shellDescriptorManager.GetShellDescriptor().Features.Any(sf => sf.Name == descriptor.Name);
+        }
+
+        //private ITheme CreateTheme(ExtensionDescriptor descriptor) {
+
+        //    var localizer = LocalizationUtilities.Resolve(_workContextAccessor.GetContext(), String.Concat(descriptor.Location, "/", descriptor.Name, "/Theme.txt"));
+
+        //    return new Theme {
+        //        //Author = TryLocalize("Author", descriptor.Author, localizer) ?? "",
+        //        //Description = TryLocalize("Description", descriptor.Description, localizer) ?? "",
+        //        DisplayName = TryLocalize("Name", descriptor.DisplayName, localizer) ?? "",
+        //        //HomePage = TryLocalize("Website", descriptor.WebSite, localizer) ?? "",
+        //        ThemeName = descriptor.Name,
+        //        //Version = descriptor.Version ?? "",
+        //        Tags = TryLocalize("Tags", descriptor.Tags, localizer) ?? "",
+        //        Zones = descriptor.Zones ?? "",
+        //        BaseTheme = descriptor.BaseTheme ?? "",
+        //        Enabled = IsThemeEnabled(descriptor)
+        //    };
+        //}
+    }
+
+}
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/ViewModels/ThemesIndexViewModel.cs b/src/Orchard.Web/Modules/Orchard.Themes/ViewModels/ThemesIndexViewModel.cs
index 6c872c896..10aba3a0f 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/ViewModels/ThemesIndexViewModel.cs
+++ b/src/Orchard.Web/Modules/Orchard.Themes/ViewModels/ThemesIndexViewModel.cs
@@ -2,9 +2,20 @@
 using Orchard.Environment.Extensions.Models;
 
 namespace Orchard.Themes.ViewModels {
-    public class ThemesIndexViewModel  {
+    public class ThemesIndexViewModel {
         public ExtensionDescriptor CurrentTheme { get; set; }
-        public IEnumerable<ExtensionDescriptor> Themes { get; set; }
-        public IEnumerable<string> FeaturesThatNeedUpdate { get; set; }
+        public IEnumerable<ThemeEntry> Themes { get; set; }
+    }
+
+    public class ThemeEntry {
+        public ExtensionDescriptor Descriptor { get; set; }
+        public bool Enabled { get; set; }
+        public bool NeedsUpdate { get; set; }
+
+        public string ThemeName { get { return Descriptor.Name; } }
+        public string DisplayName { get { return Descriptor.DisplayName; } }
+        public string ThemePath(string path) {
+            return Descriptor.Location + "/" + Descriptor.Name + path;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Views/Admin/Index.cshtml b/src/Orchard.Web/Modules/Orchard.Themes/Views/Admin/Index.cshtml
index ce05c4e67..241155080 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/Views/Admin/Index.cshtml
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Views/Admin/Index.cshtml
@@ -15,7 +15,7 @@
 	<p>
 		@T("Version:") @Model.CurrentTheme.Version<br />
 		@Model.CurrentTheme.Description<br />
-		@Model.CurrentTheme.HomePage
+		@Model.CurrentTheme.WebSite
 	</p>
 
 	@Html.ActionLink(T("Install a new Theme").ToString(), "Install", null, new { @class = "button primaryAction" })
@@ -24,11 +24,11 @@
 <h2>@T("Available Themes")</h2>
 <ul class="templates">
 	@foreach (var theme in Model.Themes) {
-		if (Model.CurrentTheme == null || theme.ThemeName != Model.CurrentTheme.ThemeName) {
+		if (Model.CurrentTheme == null || theme.ThemeName != Model.CurrentTheme.Name) {
 			<li>
 				<div>
 					<h3>@theme.DisplayName</h3>
-					@Html.Image(Href(Html.ThemePath(theme, "/Theme.png")), Html.Encode(theme.DisplayName), null)
+					@Html.Image(Href(theme.ThemePath("/Theme.png")), Html.Encode(theme.DisplayName), null)
 					@using (Html.BeginFormAntiForgeryPost(Url.Action(theme.Enabled ? "Disable" : "Enable"), FormMethod.Post, new { @class = "inline" })) {
 						@Html.Hidden("themeName", theme.ThemeName)
 						<button type="submit" title="@T(theme.Enabled ? "Disable" : "Enable")">@T(theme.Enabled ? "Disable" : "Enable")</button>
@@ -41,13 +41,13 @@
 						@Html.Hidden("themeName", theme.ThemeName)
 						<button type="submit" title="@T("Preview")">@T("Preview")</button>
 					}
-					<h5>@T("By") @theme.Author</h5>
+					<h5>@T("By") @theme.Descriptor.Author</h5>
 					<p>
-						@T("Version:") @theme.Version<br />
-						@theme.Description<br />
-						@theme.HomePage
+						@T("Version:") @theme.Descriptor.Version<br />
+						@theme.Descriptor.Description<br />
+						@theme.Descriptor.WebSite
 					</p>
-                    @if(Model.FeaturesThatNeedUpdate.Contains(theme.ThemeName)){
+                    @if(theme.NeedsUpdate){
 						using (Html.BeginFormAntiForgeryPost(Url.Action("Update"), FormMethod.Post, new { @class = "inline link" })) {
                             @Html.Hidden("themeName", theme.ThemeName)
                             <button type="submit" class="update">@T("Update")</button> <br/>
diff --git a/src/Orchard.Web/Themes/Primus/Theme.png b/src/Orchard.Web/Themes/Primus/Theme.png
new file mode 100644
index 000000000..e1371de56
Binary files /dev/null and b/src/Orchard.Web/Themes/Primus/Theme.png differ
diff --git a/src/Orchard.Web/Themes/Primus/Theme.txt b/src/Orchard.Web/Themes/Primus/Theme.txt
new file mode 100644
index 000000000..ec969317d
--- /dev/null
+++ b/src/Orchard.Web/Themes/Primus/Theme.txt
@@ -0,0 +1,6 @@
+Name: Primus
+Author: Lou
+Description: desc
+Version: 0.1
+Website: http://whereslou.com
+Zones: Main, Sidebar
diff --git a/src/Orchard.Web/Themes/Secundus/Theme.png b/src/Orchard.Web/Themes/Secundus/Theme.png
new file mode 100644
index 000000000..e1371de56
Binary files /dev/null and b/src/Orchard.Web/Themes/Secundus/Theme.png differ
diff --git a/src/Orchard.Web/Themes/Secundus/Theme.txt b/src/Orchard.Web/Themes/Secundus/Theme.txt
new file mode 100644
index 000000000..5e4860dda
--- /dev/null
+++ b/src/Orchard.Web/Themes/Secundus/Theme.txt
@@ -0,0 +1,6 @@
+Name: Secundus
+Author: Lou
+Description: desc
+Version: 0.1
+Website: http://whereslou.com
+Zones: Main, Sidebar
diff --git a/src/Orchard.Web/Themes/Themes.csproj b/src/Orchard.Web/Themes/Themes.csproj
index 7b6afc1bf..6e4a12edf 100644
--- a/src/Orchard.Web/Themes/Themes.csproj
+++ b/src/Orchard.Web/Themes/Themes.csproj
@@ -49,6 +49,10 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
+    <Content Include="Primus\Theme.png" />
+    <Content Include="Primus\Theme.txt" />
+    <Content Include="Secundus\Theme.png" />
+    <Content Include="Secundus\Theme.txt" />
     <Content Include="TheAdmin\Scripts\admin.js" />
     <Content Include="TheAdmin\Styles\ie.css" />
     <Content Include="TheAdmin\Styles\images\menuClosed.gif" />
@@ -93,7 +97,6 @@
     <Content Include="TheAdmin\Views\Header.cshtml" />
     <Content Include="TheThemeMachine\Views\Layout.cshtml" />
   </ItemGroup>
-  <ItemGroup />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/Orchard.Web/Web.config b/src/Orchard.Web/Web.config
index 3a2a8e043..be12b290a 100644
--- a/src/Orchard.Web/Web.config
+++ b/src/Orchard.Web/Web.config
@@ -57,7 +57,7 @@
             affects performance, set this value to true only 
             during development.
     -->
-    <compilation debug="false" targetFramework="4.0">
+    <compilation debug="true" targetFramework="4.0">
       <buildProviders>
         <add extension=".csproj" type="Orchard.Environment.Extensions.Compilers.CSharpExtensionBuildProviderShim"/>
       </buildProviders>
diff --git a/src/Orchard/Environment/Features/FeatureManager.cs b/src/Orchard/Environment/Features/FeatureManager.cs
index d574b2481..b4f347f71 100644
--- a/src/Orchard/Environment/Features/FeatureManager.cs
+++ b/src/Orchard/Environment/Features/FeatureManager.cs
@@ -1,5 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
+using Orchard.Environment.Descriptor;
+using Orchard.Environment.Descriptor.Models;
 using Orchard.Environment.Extensions;
 using Orchard.Environment.Extensions.Models;
 
@@ -8,16 +11,22 @@ namespace Orchard.Environment.Features {
         IEnumerable<FeatureDescriptor> GetAvailableFeatures();
         IEnumerable<FeatureDescriptor> GetEnabledFeatures();
 
-        void EnableFeature(string name);
-        void DisableFeature(string name);
+        void EnableFeatures(IEnumerable<string> featureNames);
+        void DisableFeatures(IEnumerable<string> featureNames);
     }
 
-
     public class FeatureManager : IFeatureManager {
         private readonly IExtensionManager _extensionManager;
+        private readonly ShellDescriptor _shellDescriptor;
+        private readonly IShellDescriptorManager _shellDescriptorManager;
 
-        public FeatureManager(IExtensionManager extensionManager) {
+        public FeatureManager(
+            IExtensionManager extensionManager,
+            ShellDescriptor shellDescriptor,
+            IShellDescriptorManager shellDescriptorManager) {
             _extensionManager = extensionManager;
+            _shellDescriptor = shellDescriptor;
+            _shellDescriptorManager = shellDescriptorManager;
         }
 
         public IEnumerable<FeatureDescriptor> GetAvailableFeatures() {
@@ -28,12 +37,30 @@ namespace Orchard.Environment.Features {
             throw new NotImplementedException();
         }
 
-        public void EnableFeature(string name) {
-            throw new NotImplementedException();
+        public void EnableFeatures(IEnumerable<string> featureNames) {
+            var currentShellDescriptor = _shellDescriptorManager.GetShellDescriptor();
+
+            var updatedFeatures = currentShellDescriptor.Features
+                .Union(featureNames
+                           .Where(name => !currentShellDescriptor.Features.Any(sf => sf.Name == name))
+                           .Select(name => new ShellFeature {Name = name}));            
+
+            _shellDescriptorManager.UpdateShellDescriptor(
+                currentShellDescriptor.SerialNumber,
+                updatedFeatures,
+                currentShellDescriptor.Parameters);
         }
 
-        public void DisableFeature(string name) {
-            throw new NotImplementedException();
+        public void DisableFeatures(IEnumerable<string> featureNames) {
+            var currentShellDescriptor = _shellDescriptorManager.GetShellDescriptor();
+
+            var updatedFeatures = currentShellDescriptor.Features
+                .Where(sf => !featureNames.Contains(sf.Name));
+
+            _shellDescriptorManager.UpdateShellDescriptor(
+                currentShellDescriptor.SerialNumber,
+                updatedFeatures,
+                currentShellDescriptor.Parameters);
         }
 
 
diff --git a/src/Orchard/Orchard.Framework.csproj b/src/Orchard/Orchard.Framework.csproj
index 6db017c77..294fc8e21 100644
--- a/src/Orchard/Orchard.Framework.csproj
+++ b/src/Orchard/Orchard.Framework.csproj
@@ -186,6 +186,7 @@
     <Compile Include="Security\CurrentUserWorkContext.cs" />
     <Compile Include="Settings\CurrentSiteWorkContext.cs" />
     <Compile Include="Settings\ResourceDebugMode.cs" />
+    <Compile Include="Themes\ThemeManager.cs" />
     <Compile Include="UI\FlatPositionComparer.cs" />
     <Compile Include="UI\Resources\IResourceManifestProvider.cs" />
     <Compile Include="UI\Resources\ResourceManifestBuilder.cs" />
diff --git a/src/Orchard/Themes/IThemeManager.cs b/src/Orchard/Themes/IThemeManager.cs
index 1fc41ed14..40f37ccf4 100644
--- a/src/Orchard/Themes/IThemeManager.cs
+++ b/src/Orchard/Themes/IThemeManager.cs
@@ -1,42 +1,9 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Web.Routing;
-using Orchard.Environment.Extensions;
 using Orchard.Environment.Extensions.Models;
 
 namespace Orchard.Themes {
     public interface IThemeManager : IDependency {
-        [Obsolete]
         ExtensionDescriptor GetRequestTheme(RequestContext requestContext);
     }
-
-    public class ThemeManager : IThemeManager {
-        private readonly IEnumerable<IThemeSelector> _themeSelectors;
-        private readonly IExtensionManager _extensionManager;
-
-        public ThemeManager(IEnumerable<IThemeSelector> themeSelectors,
-            IExtensionManager extensionManager) {
-            _themeSelectors = themeSelectors;
-            _extensionManager = extensionManager;
-        }
-
-        public ExtensionDescriptor GetRequestTheme(RequestContext requestContext) {
-             var requestTheme = _themeSelectors
-                .Select(x => x.GetTheme(requestContext))
-                .Where(x => x != null)
-                .OrderByDescending(x => x.Priority);
-
-            if (requestTheme.Count() < 1)
-                return null;
-
-            foreach (var theme in requestTheme) {
-                var t = _extensionManager.GetExtension(theme.ThemeName);
-                if (t != null)
-                    return t;
-            }
-
-            return _extensionManager.GetExtension("SafeMode");
-        }
-    }
 }
diff --git a/src/Orchard/Themes/ThemeManager.cs b/src/Orchard/Themes/ThemeManager.cs
new file mode 100644
index 000000000..21dd709a8
--- /dev/null
+++ b/src/Orchard/Themes/ThemeManager.cs
@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Web.Routing;
+using Orchard.Environment.Extensions;
+using Orchard.Environment.Extensions.Models;
+
+namespace Orchard.Themes {
+    public class ThemeManager : IThemeManager {
+        private readonly IEnumerable<IThemeSelector> _themeSelectors;
+        private readonly IExtensionManager _extensionManager;
+
+        public ThemeManager(IEnumerable<IThemeSelector> themeSelectors,
+                            IExtensionManager extensionManager) {
+            _themeSelectors = themeSelectors;
+            _extensionManager = extensionManager;
+        }
+
+        public ExtensionDescriptor GetRequestTheme(RequestContext requestContext) {
+            var requestTheme = _themeSelectors
+                .Select(x => x.GetTheme(requestContext))
+                .Where(x => x != null)
+                .OrderByDescending(x => x.Priority);
+
+            if (requestTheme.Count() < 1)
+                return null;
+
+            foreach (var theme in requestTheme) {
+                var t = _extensionManager.GetExtension(theme.ThemeName);
+                if (t != null)
+                    return t;
+            }
+
+            return _extensionManager.GetExtension("SafeMode");
+        }
+    }
+}
\ No newline at end of file