diff --git a/Main/Source/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorCanvas/Implementation/ColorSpectrumSlider.cs b/Main/Source/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorCanvas/Implementation/ColorSpectrumSlider.cs
index 54bb6e9e..9224a8fb 100644
--- a/Main/Source/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorCanvas/Implementation/ColorSpectrumSlider.cs
+++ b/Main/Source/ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/ColorCanvas/Implementation/ColorSpectrumSlider.cs
@@ -8,7 +8,7 @@ using Microsoft.Windows.Controls.Core.Utilities;
 
 namespace Microsoft.Windows.Controls
 {
-    internal class ColorSpectrumSlider : Slider
+    public class ColorSpectrumSlider : Slider
     {
         #region Private Members