Preheat the oven to 350 F. In a large bowl, mix cake mix with oats, eggs, and vegetable oil until smooth. Divide dough between three bowls. Mix one with red food coloring and one with blue.
Take a small amount of each cookie dough and roll together into balls. Place onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.