Another selection of very nice Linux Mint MATE themes.
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. … Read more