Post #577381 by TorchGuy on Wed, Feb 23, 2011 8:36 AM

Theatrical supply stores and some DJ supply places will sell what's called a 'gel'. Gels are transparent colored plastic sheet, very thin but not crushable like colored cellophane - strong enough to be used for their intended purpose, which is coloring stage and nightclub lights.

Gel comes in about a billion different shades - a subtle shade difference can make or break stage lighting designs. Bring your lights to a theatrical supply shop and see how different colors look over them; most have these in sliding trays or rows of folders, where you can easily leaf through them.