Fun to see The Silly Symphony Skeleton Dance
In the The Grim Adventures of Billy & Mandy: Hill Billy "Billy wants to learn how to juggle chickens, so he visits Uncle Chokey, the chicken juggler legend. Soon, the farm turns into that of a retro black-and-white cartoon."
When the black and white format overtakes Grim, he looks down at his altered bones and says in disgust, "Oh, great. There goes my whole design ethic!"
Then Grim goes on to do the the Skelly Dance!