??? color should i paint my walls?

It sounds like your room has a spring type of feel to it. If you do purple it would look good. I even think a lime green might work. Id go to the hardware store and pick up paint swatches and take them home. Match them up to your bedspread and pillows. Than you can see which one would match all your stuff the best. Worst comes to worst you can always repaint :) Also you can get removable wall decalls and place them on the wall to make it more decorative and funky. They make loads and they carry them on targets website.