Preheat the oven to 350 F. In a large bowl, whisk together cake mix, eggs, and vegetable oil until smooth. Add in the green food coloring, and mix until it is fully green.
Place the powdered sugar into a shallow dish. Use a cookie scoop to form the cookie dough into balls, roll each ball into the powdered sugar.
Place the cookies onto a large ungreased baking sheet. Place one heart shaped sprinkle onto each cookie. Bake for 10-12 minutes.