Any good room decorating ideas?

ok so im 13 right now and im kind of sporty, not girly at all. i like places that look warm and cozy, because i live in a cold area. right now my room is tan with a light tan sponged on to it. it has a stone fireplace in it and a stone mantle. it has wooden floors. any good color schemes for this room? or what should i put in my room? i want a bed of course and a wardrobe and maybe a desk. any ideas?