refactor colorpicker

HandyControl/Interactivity/ControlCommands.cs

@@ -7,6 +7,11 @@ namespace HandyControl.Interactivity
     /// </summary>
     public static class ControlCommands
     {
+        /// <summary>
+        ///     切换
+        /// </summary>
+        public static RoutedCommand Switch { get; } = new RoutedCommand("Switch", typeof(ControlCommands));
+
         /// <summary>
         ///     右转
         /// </summary>