Copy "none.png" and "panel-dark.png" to "/usr/share/themes/Ambiance/gtk-2.0/apps/img". Replace "gnome-panel.rc" in "/usr/share/themes/Ambiance/gtk-2.0/apps" with the attached replacement.
All needed files are in the attached .tar.gz. This needs some more fine tuning, but the direction is really well.
Ok, got it. It's NOT perfect, but it works.
Do the following:
Copy "none.png" and "panel-dark.png" to "/usr/share/ themes/ Ambiance/ gtk-2.0/ apps/img" . Replace "gnome-panel.rc" in "/usr/share/ themes/ Ambiance/ gtk-2.0/ apps" with the attached replacement.
All needed files are in the attached .tar.gz. This needs some more fine tuning, but the direction is really well.