Quality eye exams at Klauer Optical Long before cartoons planted this idea in most of our minds, it was thought bulls were made mad by the color red and hence the use of the infamous red cape in bull fights. It turns out bulls, like all other cattle, are color blind, and the bull is not likely irritated by the muleta’s red color, but by the capes movement as the matador whips it around. Humans, on the other hand, are supposed to see red. If your color perception is not what it should be, let us give you a thorough eye exam and recommend lenses that can help you see the entire visible spectrum better.