Preheat oven to 350 degrees.
Combine cake mix, eggs whites, milk, and oil in a large bowl.
Mix on medium speed for 2 minutes until smooth and creamy.
Separate the prepared mix into two bowls with an equal amount in each.
Color one bowl yellow using the yellow food coloring.
Color the other bowl orange using the yellow and red food coloring.
Place cupcake liners into muffin tin.
Fill all muffin liners 1/2 way with yellow cake mix. Tap it on the counter a few times so that the yellow settles.
Then do the same with the orange cake mix.
Bake for 18-20 minutes.
Cool for 1 hour before frosting.