+void Control::ClearBackground()
+{
+ mImpl->UnregisterVisual( Toolkit::Control::Property::BACKGROUND );
+ mImpl->mBackgroundColor = Color::TRANSPARENT;
+
+ // Trigger a size negotiation request that may be needed when unregistering a visual.
+ RelayoutRequest();
+}
+
+void Control::SetShadow( const Property::Map& map )