Fans of the gorgeous Orta GTK+ theme take note: it now has a PPA, which will make staying up-to-date with all of the latest fixes and improvements a breeze.
Add the PPA, in bold, via your preferred method or run the following two commands in a Terminal:
sudo add-apt-repository ppa:nikount/orta-desktop
sudo apt-get update && sudo apt-get install orta-theme
Tip | Randy