Are you sure the dads are different? I have an American game hen who is a mix of cream, beige, red, and buff, and the dad is a white Leghorn bantam/Serama cross (he's white except for some pale gold highlights on his neck feathers and some rust and brown streaks on his wings). The two have been together in the coop/run without access to any other chickens for about a year and the hen just hatched out a batch of 11 chicks. Five are predominantly white with a few spots of the colors mentioned above (which I expected all or most of them to be), one is almost a carbon copy of momma hen, one is gold and brown, and four are almost solid black (with a few white or gold highlights on neck and breast feathers). So, I'm assuming that solid black color comes from dad's Serama line (but I'm not 100% sure since I'm not a chicken genetics expert

). But it was so cool seeing those little charcoal fluff balls when they popped their heads out from under momma hen's wing <3.