[ Thanks to kiterunner for this link.
]
“One of the most common queries I get from our readers
is regarding the availability of quality themes in Ubuntu. As you
all know there are plenty of themes out there and the difficult
thing is to choose good from bad. So here is our collection of 6
brilliant GNOME GTK themes you should definitely give a try in your
Ubuntu.* Download Divergence IV – ‘A New Hope’ GTK Theme
* Download Illi! 0.5 GNOME GTK Theme
* Equinox GTK Theme Installation Instructions in Ubuntu – My
First Choice.”