You said "paint" does that mean you have existing furniture? -- the wall color is beautiful but very dark I would avoid dark woods, possibly white or grey would look wonderful! possibly for contemporary looks grey would look great. for a rustic look I think a light brown would look great.

This is a kids room but check out the grey, and the rustic browns.

http://www.bassettfurniture.com/rooms-we-love/kids-rooms-we-love.asp

You should consider painting the window trim to match the furniture once you decide on a color. As is, the wood color looks kind of dated and clashes with the modern feel of the blue. I agree that whites or grays, as in brownw74's posted images, would look great and give you a more fresh look. Alternatively you could stain the window trim a darker more rustic shade of brown, like the dresser in Joanna's posted image.