One of the great things about Gnome is the large number of desktop customizations and themes.
Returned back to the Ambiance Colors theme with a spice of red.
I'm running Ubuntu 12.04 running the standard Gnome Shell. Below is a link where to get it. Many of my friends have been without power, due to the effects of Hurricane Sandy during the past week. So a black dark theme seems appropriate this month...
You can get the GTK3 theme Ambiance & Radiance colors here:
http://www.webupd8.org/2012/01/download-ambiance-and-radiance-themes.html