A GDM theme which uses the power of GMD XML to present a login screen with no graphics, yet maintains a 3D effect.
This GDM Theme was created using strictly the XML available for GDM Themes. I believe that this theme shows the sheer configuration power of the GNOME Desktop Manager.
You'll find that the xml is not commented but I did leave it indented. I did not comment the code in hope that people will have to learn more about the GDM XML if they try figure this theme out.