HT room is 17 by 12 wide. 120 inch daigonal 4:3 screen at front, X1 projector ceiling mounted 16.5 feet back. Wonderful clear image, but significant light spill which I understand is a problem with these "cheaper" projectors. Currently, the room has a light wall colour, and when a movie is playing with no room lights on, the walls light up. Any suggestions on wall colour. Should I paint the front wall a flat black and ceiling as well. I was thinking maybe a burgandy on the side walls. What colour carpeting? Currently a tan burber. I'd like to build a riser in the back, about 6 inches high and about 4.5 feet in depth. Would you recommend building this on top of the existing carpet, and is so, how should I attach it or will it's weight along hold it. Should I rip the carpet up in the back, and glue it to the cement. There is in floor heating so I don't really want to drive nails into the conrete floor. Thanks.