by Koji on Fri Aug 10, 2012 8:04 pm
Create a new folder called .themes (the . is important!) In your home folder and put all your downloaded themes there. Note putting . in front of the name makes the folder hidden, so you may need to click "show hidden files" for it to show when adding them.
After you install some new themes to that folder they should show up in the themes menu, best of all you don't have to worry about constantly sudo moving things.