It's similar to the Ivory clown project I'm working on.

Bred to a clown it will make all yellow belly clowns.
It may not be THE most beautiful snake but what it will make is truly beautiful.

With those het pieds you have I'd think you'd die for an Ivory pied
All yellow bellies and half of those (by odds) would be pieds and the rest would be 100% het for pied.

Now that's a powerful breeder