In the 1939 Hollywood classic The Wizard of Oz, the horse pulling Dorothy and her friends around Emerald City changes from white to purple to red orange to yellow. The ASPCA would not let the crew paint the horse, so they tried food coloring and liquid candy but it was too pale and tasted so good that the horse licked it off. Arnold Gillespie, in charge of special effects, finally used paste made with Jell-O powder. The horse still licked it, but with frequent touch-ups, the paste stayed on long enough to complete the filming. Read more about the movie in A Brain. A Heart. The Nerve. (see NOVELS).