--- src/interface.c	2008-10-03 20:44:47.248559035 +0800
+++ src/interface.c.new	2008-10-03 20:55:56.685158221 +0800
@@ -2042,6 +2042,16 @@
   	gtk_window_set_title(GTK_WINDOW(main_window),
 		                 _("Blastwave"));
 
+	/* Set the colour map */
+	GdkScreen *screen = gtk_widget_get_screen(main_window);
+	GdkColormap *colormap = gdk_screen_get_rgba_colormap (screen);
+
+	if (colormap && gdk_screen_is_composited (screen))
+	{
+		gtk_widget_set_default_colormap(colormap);
+	}
+	/* End set colour map */
+
   	GdkPixbuf *main_window_icon_pixbuf = create_pixbuf("blastwave_16.png");
 
   	if(main_window_icon_pixbuf)