Begin by bringing a large pot of salted water to a rolling boil over high heat. Once boiling, add the pasta, stirring occasionally, and cook for 12-13 minutes until tender. Drain the pasta using a colander.

While the pasta is still warm, add the cheese sauce packet and 4 tablespoons of butter to the pot. Stir until the butter melts and the cheese becomes creamy.

Gradually add drops of green food coloring to the mixture, stirring continuously until you reach your desired shade of vibrant green.

Spoon the colorful mac and cheese into serving bowls and decorate with candy eyeballs on top of each serving.