The megan fox theme is hot, but I would say a Marissa Miller theme would be even better, for those of you who don't know who marissa miller is, she was one of the sports illustrated swimsuit models and in my opinion the hottest one. Oh and just search google images "Marissa Miller" and you will understand why a Marissa Miller theme is needed lol
Not quite the same as a whole new theme of course, but I took a pic from her spread in GQ last year and resized it. It's black and white, so it goes really well with the default theme imo.