Preheat the oven to 350 F. In a large bowl, mix together cake mix, eggs, and vegetable oil until smooth. Divide the cookie dough into three bowls. Mix one with purple food coloring, one with orange food coloring, and one with green food coloring.
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.