Install Orion Theme on Ubuntu for GTK 2-3

Install Orion Theme on Ubuntu 12.04/11.10 for GTK 2-3

Orion is a modern light theme for Gnome. The theme is compatible with the latest GTK 3.2 and uses the Unico engine. It also includes a GTK 2.0 theme using Murrine engine.

To install Orion Theme 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 orion-gtk-theme

For Other Distro's Download from this Author Page, That's it