Bedroom Makeover for a teenage girl?

She is on vacation and i want to suprise her with a Bedroom Makeover so what do all teenagers want in their room and colors and everything she likes the colors sky blue lime green and hot pink she is sporty and loves softball and she likes volleyball and she has a bedroom in our basement that is like huge bigger than the master by a lil bit an do you know of any like free design your bedroom websites or free iphone 4 apps like that but thanks plzz help