Black Paint

What should I do with my extra black paint?
I have a room thats TV walls are painted beige. With a wall covered with a black curtain from ceiling to floor in front of the curtain is have the TV goes. Now I have a gallon of black paint is there a way I could us it for beautify the room?
Try to take the painting back to the store for a refund. Black is a bit outdated.That all red / black / white thing is really tired and old. You could try painting the furniture with her but if she is not painting flat. Otherwise, forget for the moment.