--- src/main_window.c	2008-05-24 21:03:46.000000000 +0800
+++ src/main_window.c.new	2008-10-03 21:59:20.581446687 +0800
@@ -321,6 +321,15 @@
 
     gtk_window_set_title(GTK_WINDOW(window), PACKAGE_STRING);
     gtk_window_add_accel_group(GTK_WINDOW(window), accel_group);
+    /* Set the colour map */
+    GdkScreen *screen = gtk_widget_get_screen(GTK_WINDOW(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 */
 
     window->priv->manager = gtk_recent_manager_get_default();
     window->priv->navigator = rstto_navigator_new(window->priv->manager);
--- src/picture_viewer.c.orig	2008-10-04 15:14:29.608569136 +0800
+++ src/picture_viewer.c	2008-10-04 15:14:11.321901896 +0800
@@ -170,6 +170,7 @@
     viewer->priv->src_pixbuf = NULL;
     viewer->priv->dst_pixbuf = NULL;
     viewer->priv->zoom_mode = RSTTO_ZOOM_MODE_CUSTOM;
+    gtk_widget_set_colormap(GTK_WIDGET(viewer), gdk_screen_get_rgb_colormap(gdk_screen_get_default()));
     gtk_widget_set_redraw_on_allocate(GTK_WIDGET(viewer), TRUE);
     gtk_widget_set_events (GTK_WIDGET(viewer),
                            GDK_BUTTON_PRESS_MASK |