OH!!! Now the color scheme makes sense! It's a tribute to Mickey Mouse as the Sorcerer's apprentice in Fantasia

I'm kind of embarrassed to say that I've never seen Fantasia. Even moreso since I recently learned that my grandfather's older brother was an audio engineer working for Disney in the 1930's and helped to develop what was at that time a revolutionary way to produce sound for film. Walt Disney called it "Fantasound".