ubuntu 13.04 version @ http://gnome-look.org/content/show.php?content=158419
update for ubuntu 12.10 @: http://gnome-look.org/content/show.php?content=154836
just the standard ambiance with a few changes:
-no more orange, hello, fresh lime-green.
-dark sidebar in nautilus.
-bonus: cinnamon theme, some small adjustments of the standard theme to fit in with the rest.
Ambiance - lime 12.04
tested on ubuntu 12.04, forked from the standard theme of that system
Ambiance - lime 11.10
tested on ubuntu 11.10, forked from http://ubuntu-art.org/content/show.php?action=content&content=147891
doesn't work on 12.04 anymore...
installation: unzip and place the folder that fits your ubuntu version best in your ~/.theme folder
feedback will be appreciated.