lisajones said:
Try using black curtains, maybe a black throw rug. Don't paint the walls black. You could use black decorations on the walls, like black photo frames. Maybe you could find black & red curtains.
This is an excellent idea; when we moved into our house, one room had black walls. It took two coats of primer and two coats of one coat only paint to cover the black. In certain lights the black still came through.
Perhaps one wall could be red, with the black curtains and rugs. Red and black accessories and white to balance it out.Good luck, I do like your color combos. A very dark room can put you in a very dark mood.