This brief tutorial will show you how to delete desktop themes in Ubuntu you no longer want installed. If you have been testing themes and decide that you no longer need a particular theme, this tutorial will show you how to delete it. Since by default themes are installed in a restricted directory, only root can delete themes.
Getting started:
To get started, press Alt-F2 on your keyboard and type the command below and click ‘Run’
gksu gnome-appearance-properties
Then select a theme you no longer need and click ‘Delete’
Then click ‘Delete’ again to finally remove it.
Thanks for reading and please come back soon.