Numix is one of the most beautiful themes set for Linux desktop. It was initially created in 2013-14 and since then, it’s become a host favorite among Linux users. There have been many new beautiful icon themes for Linux lately but Numix remains an evergreen hit. Its flat approach gives a fresh look to your desktop. This was the reason why several Linux distributions used to ship with Numix as the default theme.
sudo add-apt-repository ppa:numix/ppa
sudo apt-get update
sudo apt-get install numix-gtk-theme numix-icon-theme-circle
sudo apt-get install unity-tweak-tool
