Watterson was known for being very much a stickler for the format and color of the comic. He'd eschew printing norms for the Sunday format and more or less for

Watterson was known for being very much a stickler for the format and color of the comic. He'd eschew printing norms for the Sunday format and more or less force papers to either print it how he wanted or not get it at all. The response was that the papers would just cancel the whole strip rather than give in to his artistic demands.