Aa, usually a light color like cream or beige is brought out by a bit of a darker one, such as a rich brown or black. A color to compliment also works quite well. Like, say you do use blue. Depending on the shade and hue, orange would be your best choice. It really depends on what you want the main color of the room to be. Then you build off from there with the accents.

Ah, yes! I-I'm really not that good, but I paint portraits of the thirteen Brush Gods back home where I'm from. I was training to become a Celestial Envoy, a messenger of the gods, before I was taken here.