Eydsamoht thanks for the detailed explanation. It makes me realize there's a lot of thought that needs to go into setting up a home theater properly. Ben38, thanks for your advice. From reading other threads it seem like, as you recommended, a white screen is the way to go if possible. I could try getting samples of both white and gray screen, or buy the white screen and blackout curtains in the room and that should work. I do have light wood floor and white ceiling though. I may carpet the floor when I had the second tier of seating but the white ceiling will be a pain if i have to paint it. the wall with the screen is darker tone of red and side walls green so those should be ok.