“[I]n English they have more than three thousand terms for different colors, yet most people can name eight at best. The average person can recognize the colors of the rainbow: red, orange, yellow, green, blue, indigo, and violet—though people already begin to have trouble with indigo and violet. It takes a lot of experience to learn to distinguish and name the various shades, and a painter is better at it than, say, a taxi driver, who just has to know the colors of traffic lights.”

—Umberto Eco, The Mysterious Flame of Queen Loana, 2005.