Dorian Dark theme for Ubuntu 13.04/12.10/12.04/Linux Mint

Install Dorian dark theme in Ubuntu 13.04 Raring/Ubuntu 12.10 Quantal/Ubuntu 12.04 Precise/Linux Mint 14/13

Dorian is dark theme and has many of its own unique characteristics. To name a couple, hovered buttons grow in size, and insensitive buttons/widgets have a diagonal pattern distinguishing them from normal or active states. Dorian's appearance is consistent between Gtk2 and Gtk3. This theme has two metacity themes for left and right buttons.

Theme tested on Ubuntu 13.04/12.10/12.04

1st: zonColor Wallpapers used in screenshots, Also checkout Black Wallpapers
2nd: zonColor-Icons used in screenshots, Also checkout icons collection
3rd: You can use Unity Tweak Tool, Gnome-tweak-tool or Ubuntu-Tweak to change themes.

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

Terminal Commands:
sudo add-apt-repository ppa:noobslab/themes
sudo apt-get update
sudo apt-get install dorian-theme

That's it

Source: Dorian Theme