I have a small room that doubles as an office and a home theater. The Gatorboard screen is above the desk, and I view from 9 feet away. The walls are off white and I figure I'm losing significant contrast from my Sanyo PLV-Z2 LCD front projector by virtue of light from the screen illuminating the ceiling and the adjacent wall and coming back to the screen. I figure it's obviously not necessary to paint the whole room black, but I figure the contrast will improve significantly if I paint most of the ceiling and half the adjacent wall. What do people use? Any old cheap flat black paint? I am making a Home Depot run in a matter of days and figured I'd pick up something cheap. I suppose they have cheap gallons of flat black that I can roll on after throwing a tarp over things. Is that the way to go or is there a better idea? Thanks!