Install GreyBird GTK3 theme on Ubuntu 12.04/Linux Mint 13

Install GreyBird GTK3 theme on Ubuntu 12.04 Precise/Linux Mint 13

GreyBird is lightweight and cool theme for Linux Environment. GreyBird is the default theme in Xubuntu 12.04/11.10/11.04.

The Greybird desktop suite includes:

• GTK2 theme
• GTK3 theme
• Xfwm4 themes (normal and compact)
• xfce-notifyd theme
• Emerald theme
• Metacity theme
• Mutter theme
• Unity support
• Granite widgets support

Also checkout Icons Collection here.

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

Terminal Commands:
sudo add-apt-repository ppa:shimmerproject/ppa
sudo apt-get update
sudo apt-get install shimmer-themes-greybird

That's it
For other Distro's Download from here.

Source: Greybird GTK3