This is a good theme for your modern Ubuntu or Linux Mint desktop, a version of the Human theme for GTK 3.0: http://gnome-look.org/content/show.php?content=164227. This is a perfect theme to make your Ubuntu desktop look like the old Ubuntu 8.10 releases. Here is another lovely GTK 3.0 theme, Dorian: http://gnome-look.org/content/show.php/Dorian+Theme?content=157200. A collection of old Ubuntu wallpapers: …

http://gnome-look.org/content/show.php/GnomishGray?content=149193&PHPSESSID=4d672c87c3867429f5197e1ab6ab7851. Gnomish Grey. An excellent GTK 3.0 theme. http://gnome-look.org/content/show.php/Zukini?content=147431. Zukini. This is another very cool GTK 3.0 theme. This may not work with Gnome Shell 3.5, so if you are running Ubuntu 12.10, you are out of luck. But it also includes a theme for the Awesome Window manager, so that is a nice bonus. …