I have come to the understanding that I should probably paint or cover my room. The wall w/my projection screen is covered w/black duventyn that is working quite nicely. now I need to deal with the other walls as they are currenty a light yellow. I understand that the darker the better, like grey, or black etc. But what is not clear to me exactly is where these colors need to be implemented. Should I just paint all the walls/ceiling, one color, or could I say have the side walls/ceiling a dark color, but the back wall a more cosmetic color. I just don't want my room to be a cave but I want the best performance possible without painting the whole thing black. Any ideas/suggestions?