Thanks, they're just such similar colours it seems like they should breed well together. But different genes makes sense. Chicken genetics fascinates me, I'm sure I will spend the rest of my life reading up on the subject.
You know a lot about genetics. I am very curious why lavender doesn't work with blue. (I also find the blue, black splash formula fascinating) I don't mean to hijack the thread, but chicken calculators are above my current skill level.