Install Elegance theme on Ubuntu 12.10/12.04/11.10 (Gnome Shell 3.6/3.4/3.2)

Install Elegance theme on Ubuntu 12.10 Quantal/Ubuntu 12.04 Precise/Ubuntu 11.10 Oneiric/Linux Mint 13/12 (Gnome Shell 3.6/3.4/3.2)

Elegance is Gnome Shell theme, which is released by satya. This theme ported to Gnome Shell 3.6 and also available for 3.4/3.2 version of Gnome Shell.
You can use these Tools to change theme and icons: Gnome Tweak Tool, Ubuntu Tweak

Theme Tested on Ubuntu 12.10 Quantal Quetzal with Gnome Shell 3.6

To install Elegance theme on Ubuntu/Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

Terminal Commands:
sudo add-apt-repository ppa:satyajit-happy/themes
sudo apt-get update
sudo apt-get install gnome-shell-theme-elegance

That's it