I agree with Kaleea, change out the surround. For all that it sounds like a lot of work, it would be easier and safer in the long run and look much better than all of the work you'll do to try to make the current one look different. Go visit the bathroom section at Lowe's and Home Depot and you'll see why. Personally I'd never want one of the prefab things at all, but if you have to have something it's easy and looks pretty good for a number of years.

If it's a narrow room you'll probably have to pull the toilet before you do it, so get the right materials for re-attaching it. And maybe now is a good time to consider changing out the flooring and really get that Southwest look with a nice terracotta tile.

SRS