Aphotic

Aphotic is a simple gtk2 theme based on Aurora Midnight, just a bit darker and a light blue foreground color. It requires the Aurora Gtk engine, which you can most likely get from your distribution's package management tool.

Go to http://wiki.github.com/seanyeh/gtk2-theme-aphotic/screenshots to see what it looks like.

Installation: Like installing any other theme, just extract the archive to ~/.themes

Enjoy!