i have a white down comforter and black sheets, what colors should i paint my room?

play around with the Sherwin Williams color visualizer to find something that you like. It is the best paint visualizer on the web, imho. I like how their color palette is laid out, I like that you can search by color family & color name, the “painted” rooms look the most realistic, and it suggests coordinating color schemes. You can literally spend hours:
http://www.sherwin.com/visualizer/

A nice green like “edamame” (# 7729) would be very natural & peaceful and add some warmth to your room.