white..or light yellow to maintain the brightness of the room...or blue..:)

We decided to redo my bedroom this summer and just ordered this bedding:

http://www.pbteen.com/m/products/zig-n-zag-duvet-cover-sham-cool-multi/?pkey=cgirls-duvet-cases

What colour should I paint my walls that would go along with it? I'm a 15 year old girl btw. Thanks!