Flatabulous is a new GTK theme said to be the best flat theme for Ubuntu and other Gnome based Linux Systems.
The theme is based on the Ultra-Flat theme. It was designed specially for the Unity environment on Ubuntu. Here are some screenshots:
Like the theme? Below is how to install the GTK theme as well as Ultra-Flat icon theme:
1. Download the GTK theme from the link below:
Then extract the archive so that you have the result folder shown below:
2. Open a new Nautilus (file browser) window. Press Ctrl+H to view hidden file folders, and create .themes folder under user’s Home directory if not exist.
3. Move Flatabulous-master folder from the Downloads folder to .themes folder.
OK, now apply the theme by launching Unity Tweak Tool (available in Software Center) and navigate to Theme page.
For the Icon Theme, go to:
Select download .deb package for ultra-flat-icons, ultra-flat-icons-green, or ultra-flat-icons-orange. Finally install it via Ubuntu Software Center.
For those who prefer adding a PPA, open terminal and run below commands one by one to get the icon theme:
sudo add-apt-repository ppa:noobslab/icons sudo apt-get update sudo apt-get install ultra-flat-icons ultra-flat-icons-green ultra-flat-icons-orange
Also apply the icons via Unity Tweak Tool -> Icons page.