Adwaita Mod Shell is a modification of the default GNOME 3 theme, bringing even more translucent menus, dialog boxes and panel, less rounded corners and buttons, as well as smaller grid icons.
How to install?
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
Here are some key features of "Adwaita Mod Shell":
· A slightly modified version of the default Adwaita GNOME Shell theme for version 3.6. Changes are:-
· * More translucent (panel, menus and dialog boxes)
· * Less rounded corners (buttons, etc.)
· * Smaller grid icons and modified spacing among them
· GNOME Shell