Transferring Norton to another computer and getting back the black background.

I'm going to be getting a new tower soon, and I'd like to move  my Norton to it.  But my relative bought it-one of those ones you can install on several computers-and logged in using his Norton account.  Will that prevent me from transferring it?

 

Also, has anyone figured out a way to switch back to the black background yet?  This gray text on the white background is impossible to read and hurts my eyes.