Divide the dry noodles into three equal portions. Boil each batch separately:
One batch in plain water (for white noodles)
One batch in water with a few drops of red food coloring
One batch in water with a few drops of blue food coloring
Drain and rinse each batch under cold water to stop cooking. Combine all three colors in a large bowl.
Chop the white cheddar and pepperoni into bite-sized pieces and add to the bowl.
Add the sliced black olives.
Pour the Italian dressing over the salad.
Stir everything together until evenly coated and colorful.
Chill for at least 30 minutes before serving for the best flavor.