protected virtual void OnCommandFontColor(object sender, System.EventArgs e)
{
ColorDialog dialog = new ColorDialog ();
if (dialog.Run () == (int) Gtk.ResponseType.Ok) {
UndoableCommand fontColor = new UndoableCommand (new ChangeAttributeCommand ("Font color",
FigureAttribute.FontColor, GdkCairoHelper.CairoColor (dialog.Color), this));
fontColor.Execute ();
}
dialog.Destroy ();
}