Try these websites:
http://interiordec.about.com/od/interiorpainting/a/diy_choosepaint.htm
http://home.ivillage.com/decorating/technique/0,,97p0,00.html
Good luck.
dark red, almost black then paint another wall a baige....or a cream color...~!!!! then you can have leather black couches...and It'll be really pretty