Murphy likes to mess with me. Admittedly, I breed corn snakes (I'm in this forum because BP genetics fascinate me!), but the odds games of het to visual are the same no matter what the species.

Last year I bred my charcoal to a butter (amel + caramel) to test him for amel. I got 18 eggs in the first clutch, with a fairly even mix of normals and amels, proving the het.

Then I got a single fertile egg out of the butter's second clutch for the year. That egg hatched out a butter. So, 19 eggs and one offspring caramel based when bred to an animal homozygous for caramel. Talk about low odds!