Dark Fragments GTK Theme

Dark Fragments is a dark GTK 2 theme, it look really nice :)

Simply Basic II GTK Theme

If you like dark simple themes this one is for you!

Download Ambiance Maverick Dark Version

Ambiance Maverick Dark Version is dark version of Ambiance theme that was included in Ubuntu 10.10 Beta version.

Clearlooks Revamp Theme

This is "revamped" version of Gnomes default GTK theme Clearlooks by zentili.