I have talked and posted before on Disney's color model department. These talented artists created the most appealing and intriguing color concepts for all of those fantastic characters.
Particularly during the 1940s and 1950s those Technicolor hues looked like fresh fruit, und you just wanted to take a bite.
Later on starting with 101 Dalmatians the character color palettes became much more muted, but still very beautiful in their own way.