Merge pull request #4403 from timunie/fix/ColorCanvasInvalidation

Fix HSV-Invalidation

Author: punker76

src/MahApps.Metro/Controls/ColorPicker/ColorPickerBase.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -224,6 +224,7 @@ private static void OnHSVValuesChanged(DependencyObject dependencyObject, Depend
 
                 colorPicker.UpdateHsvValues = false;
                 colorPicker.SetCurrentValue(SelectedColorProperty, hsv.ToColor());
+                colorPicker.SetValue(SelectedHSVColorPropertyKey, hsv);
                 colorPicker.UpdateHsvValues = true;
             }
         }