Ambiance Blackout Colors suite offers themes in 12 colors for GTK, this pack is designed by RAVEfinity based in California and they also work on other Themes, icons, wallpaper for Linux desktop & other platforms. Ambiance Blackout Colors, A totally new, fully dark version of the Ambiance Theme. A Unique and complete GTK 2 & 3 theme suite in 12 colors. With new design by RAVEfinity. This suite contains 12 amazing new colors with 37 different color variations, and these themes compatible with GTK 3.12/3.10 designed for Unity, XFCE, Cinnamon, Mate, LXDE and Gnome classic desktop environments, and one theme for Gnome Shell. If you encounter any bug or problems with this suite you can report to creator. You can use Unity Tweak Tool, Gnome-tweak-tool or Ubuntu-Tweak to change themes.
To install Ambiance-Blackout-Colors suite in Ubuntu 15.10 Wily/15.04 Vivid/14.04 Trusty/Linux Mint 17.x/17 open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal: