diff --git a/ILSpy/Controls/DockedPane.cs b/ILSpy/Controls/DockedPane.cs
index 902ef34b1..6f370ce95 100644
--- a/ILSpy/Controls/DockedPane.cs
+++ b/ILSpy/Controls/DockedPane.cs
@@ -20,8 +20,6 @@ using System;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
-using System.Windows.Markup;
-using System.Windows.Media;
 
 namespace ICSharpCode.ILSpy.Controls
 {
@@ -75,43 +73,4 @@ namespace ICSharpCode.ILSpy.Controls
 			}
 		}
 	}
-	
-	[MarkupExtensionReturnType(typeof(Color))]
-	class ControlColor : MarkupExtension
-	{
-		readonly float val;
-		
-		/// <summary>
-		/// Amount of highlight (0..1)
-		/// </summary>
-		public float Highlight { get; set; }
-		
-		/// <summary>
-		/// val: Color value in the range 105..255.
-		/// </summary>
-		public ControlColor(float val)
-		{
-			if (!(val >= 105 && val <= 255))
-				throw new ArgumentOutOfRangeException("val");
-			this.val = val;
-		}
-		
-		public override object ProvideValue(IServiceProvider serviceProvider)
-		{
-			if (val > 227) {
-				return Interpolate(227, SystemColors.ControlLightColor, 255, SystemColors.ControlLightLightColor);
-			} else if (val > 160) {
-				return Interpolate(160, SystemColors.ControlDarkColor, 227, SystemColors.ControlLightColor);
-			} else {
-				return Interpolate(105, SystemColors.ControlDarkDarkColor, 160, SystemColors.ControlDarkColor);
-			}
-		}
-		
-		Color Interpolate(float v1, Color c1, float v2, Color c2)
-		{
-			float v = (val - v1) / (v2 - v1);
-			Color c = c1 * (1 - v) + c2 * v;
-			return c * (1 - Highlight) + SystemColors.HighlightColor * Highlight;
-		}
-	}
 }
diff --git a/ILSpy/Controls/MarkupExtensions.cs b/ILSpy/Controls/MarkupExtensions.cs
new file mode 100644
index 000000000..09b185ebb
--- /dev/null
+++ b/ILSpy/Controls/MarkupExtensions.cs
@@ -0,0 +1,64 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Windows;
+using System.Windows.Markup;
+using System.Windows.Media;
+
+namespace ICSharpCode.ILSpy.Controls
+{
+	[MarkupExtensionReturnType(typeof(Color))]
+	class ControlColor : MarkupExtension
+	{
+		readonly float val;
+		
+		/// <summary>
+		/// Amount of highlight (0..1)
+		/// </summary>
+		public float Highlight { get; set; }
+		
+		/// <summary>
+		/// val: Color value in the range 105..255.
+		/// </summary>
+		public ControlColor(float val)
+		{
+			if (!(val >= 105 && val <= 255))
+				throw new ArgumentOutOfRangeException("val");
+			this.val = val;
+		}
+		
+		public override object ProvideValue(IServiceProvider serviceProvider)
+		{
+			if (val > 227) {
+				return Interpolate(227, SystemColors.ControlLightColor, 255, SystemColors.ControlLightLightColor);
+			} else if (val > 160) {
+				return Interpolate(160, SystemColors.ControlDarkColor, 227, SystemColors.ControlLightColor);
+			} else {
+				return Interpolate(105, SystemColors.ControlDarkDarkColor, 160, SystemColors.ControlDarkColor);
+			}
+		}
+		
+		Color Interpolate(float v1, Color c1, float v2, Color c2)
+		{
+			float v = (val - v1) / (v2 - v1);
+			Color c = c1 * (1 - v) + c2 * v;
+			return c * (1 - Highlight) + SystemColors.HighlightColor * Highlight;
+		}
+	}
+}
\ No newline at end of file
diff --git a/ILSpy/ILSpy.csproj b/ILSpy/ILSpy.csproj
index 20c281acf..a79b21d30 100644
--- a/ILSpy/ILSpy.csproj
+++ b/ILSpy/ILSpy.csproj
@@ -104,6 +104,7 @@
     <Compile Include="Commands\ExitCommand.cs" />
     <Compile Include="Commands\CommandWrapper.cs" />
     <Compile Include="Commands\OpenListCommand.cs" />
+    <Compile Include="Controls\MarkupExtensions.cs" />
     <Compile Include="Controls\ResourceObjectTable.xaml.cs">
       <DependentUpon>ResourceObjectTable.xaml</DependentUpon>
     </Compile>