Originally published at: https://www.cyberciti.biz/faq/change-theme-in-ubuntu/
I am unable to find an option to change themes in Ubuntu Linux. How do I install or change themes in Ubuntu 16.04/17.10 Linux? Ubuntu Tweak is utility software that makes it easy to configure your system and desktop environments for Ubuntu or Gnome based desktop. It works on Ubuntu, Debian, Fedora and other Linux…