This is my modified version of Humanoid-OSX (http://www.gnome-look.org/content/show.php?content=35753). Not that the original wasn't good, but there were a few things that I found "buggy". In this version the titlebar is always the black gradient (active/inactive windows), but the title text grays out for inactive. The button are gray when inactive, colored when hovered (Close=Red, Minimize=Yellow, and Maximize=Green), and the color darkens when the button is pressed. Hope you like it, and be sure to comment either way.