I was playing around with a darker theme based on UbuntuStudio, 
. So far. the only thing I changed was the blue to the Foresight Green.
Very nice work by the UbuntuStudio guys, keep it up!
Of course I packaged it so Foresight users can enjoy it as well:
sudo conary update gtk-theme-foresight-studio
package theme as a tarball for everyone else? It looks great!
You can get the tarball at http://www.rpath.com/rbuilder/repos/foresight/getFile?path=gtk-theme-foresight-studio-0.2.tar.bz2;pathId=6531aa33869590f405ce3d435173de4f;fileId=23731a0edfe40efa68532586b42408cca24f167e;fileV=/foresight.rpath.org%40fl%3A1-contrib/0.2-1
Just extract that to ~/.themes
Enjoy!