Painting a room bright red? Garnet red?
Forest green? CHARCOAL GREY?* Do I want to live in a CAVE?
It's unbelievable how much better I felt after getting rid of one of the set of shelves, freeing up the short WHITE wall of the room. And removing (most of, I haven't finished yet) the fake wood paneling on the ceiling.
For me, dark walls/ceilings is like living in a dungeon. @_@
* Though that was a bedroom... I guess if it's really just for sleeping there, unlike my room, where I spend most of my time, that's different.