Cels Forum

Just bought my first cels and wanted to get them framed. I looked at other mail on this site and got some brief info but still have other questions. 1)If you use UV glass is it okay to put the picture in a sunlit room? Obviously direct sunlight is out, but I would like to put them in a moderately lit room. 2)Is it okay for the cels to be in contact with the glass? I would assume it is. 3)Since I don't have the original backgrounds for my images, would it be okay to use a  colored sheet behind the image? What kind of paper is safe to use? Any other tips would be helpful as well. 
--Thanx! Crackdog