void HandleClicked (object sender, EventArgs e)
{
SelectColorDialog dlg = new SelectColorDialog (Title);
dlg.SupportsAlpha = SupportsAlpha;
dlg.Color = Color;
if (dlg.Run (ParentWindow, (c) => {})) {
Color = dlg.Color;
if (enabledOnColorChanged)
EventSink.OnColorChanged ();
}
}