CDE Inspired is a GTK2 and GTK3 theme inspired by the Solaris 8/CDE style. It is designed with retro fans in mind.
How to install the GTK3 theme?
For detailed installation instructions please see the following tutorial created by Softpedia: http://news.softpedia.com/news/How-to-Install-GNOME-Themes-in-Ubuntu-11-10-231213.shtml
How to install the GTK2 theme?
· Right click on your desktop and select Change Desktop Background
· Click on the first tab: Theme
· Drag and drop the theme's archive in the Appearance Preferences window.
· If everything is OK, you will receive a confirmation message and you can activate the theme just by clicking on it.