In an ad I saw for Betty Crocker Cake Mixes from 1952, there was a recipe for a "Color-Vision" cake. The recipe basically took a cake mix and used flavored gelatin to add color and flavor to the cake and the frosting. Based on what I had in the pantry, I used orange gelatin and also added some drained crushed pineapple to the frosting, making an Orange Pineapple Color-Vision Cake, although you could use any flavor of gelatin. I took the cake to a party and people went crazy over it!