Gaffer's tape comes in black and white. It is a cloth tape with a very good adhesive that doesn't get gunky like duct tape. It's strong, tears cleanly, and doesn't leave much, if any, residue. Also, it tends not to harm surfaces it's used on. It's used by commercial photography studios, movie houses and theater groups. It's expensive. It's too thick and impermanent, though, for anything but emergency use on bellows.