Preheat the oven to 350 F. In a large bowl, mix together cake mix, eggs and vegetable oil until smooth. Add in the purple food coloring and mix until it is fully purple. Fold in the sprinkles.
Roll the cookie dough into balls and place one Twix candy bar in each cookie dough. Roll into balls and place onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.