How complex are themes allowed to be ? Does the .xml allow for some pretty elaborate themes, or do they have to stay basic and simple ? I am looking to make a theme similar to this:
http://www.blogcdn.com/www.engadget.com/media/2007/11/xbox-update-fall-1.jpg
although im not expacting the moving animations and all that stuff to function, I am hoping to achieve the same visual style as far as hovering over a game, showing text on the screen, and boxes around the on-screen games individually.