Walt Disney World Easter Egg - Dinosaur Ride

In the boarding/disembarking area for the ride DINOSAUR at Disney's Animal Kingdom, there are several multi-colored pipes that run along the walls and ceilings. You'll notice a trio of pipes over your head - one red, one yellow, and one white - that have chemical formulas written on them. These are the formulas for ketchup, mustard, and mayonaise - fitting for a ride sponsored by McDonalds!