A Rezlooks-based colorful theme
The font used for the title bars (and in my case for most everything (personal choice, you can choose to do this in your Gnome/gtkrc settings)) is "HeldustryFTVBasic Demi", it is not GPL'd but can be downloaded with this Windows visual style: http://4impressions.net/zip/suites/04/nano.zip
Simply extract the TTF from the VS' archive and put it in ~/.fonts and rebuild your font cache (to do this it is "sudo fc-cache -f -v" in many distros).
Rezlooks is a GTK theme engine based on the cairo-enabled CVS Clearlooks engine code.
It basically strips all the stuff from clearlooks that I don't like. The lack of rounded corners is probably the most obvious change, but there are various other smaller changes too. It should also be faster than clearlooks from cvs because in order to make my changes I stripped down the code somewhat.
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GNOME is part of the GNU Project and can be used with various Unix-like operating systems, most notably Linux, and as part of Java Desktop System in Solaris.
The name originally stood for GNU Network Object Model Environment, though this acronym is deprecated. The GNOME project puts heavy emphasis on simplicity, usability, and making things “just work”.