Ambiance Blackout Flat Colors is a Modern, Fully Dark and Flat "reboot/remake" of the Ubuntu Ambiance GTK 2/3 Themes. It features a modern and clean flat look in your choice of 13 vibrant colors. With fully integrated and tested support for many of the popular desktops Including: Unity, Cinnamon, Mate, Xfce, Lxde, OpenBox, Gnome Classic & Fallback. Ambiance Blackout Flat brings you a fully dark and flat version of Ambiance. The theme was designed to be a calm beautiful shade of Dark Grey with all elements still highly visible, clear and not too dark. It is a NEW Fully flat ambiance like theme that is designed by the RAVEfinity open source design project. Completely redesigned top to bottom by RAVEfinity with main code based on Ambiance & Radiance Colors (Another theme by RAVEfinity) & stock Ambiance. This theme suite has been designed to be compatible with most GTK2/3 desktops out of the box and no longer requires a separate build for Xfce & Lxde. Vibrancy-Colors icons used in following screenshots. You can use Unity Tweak Tool, Gnome-tweak-tool or Ubuntu-Tweak to change themes.
To install Ambiance Blackout Flat 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: