I'm not working on chocolate egg laying chocolate chickens but that's a pretty cool idea. I am working, slowly, on chocolate colored chickens that lay blue eggs. I have one smallish large fowl Araucana hen with my chocolate carrying Serama rooster who is on the larger end of Serama size. Pee Wee is undersized for a large fowl but much larger than a bantam and she lays a really large, very blue egg. She's rumpless and has one tuft so I hope to have some chicks by spring, I hope. I just put her in with him and he's been breeding her but she's come off a moult so she's not laying right now. Since they're in the garage and have lights on, I hope to get a few chicks sooner or later. I have a pretty nice black Araucana breeding pen that still has improvement to do but getting there so I would love to hatch a couple of chocolate or chocolate carrying cockerels to breed back to some of my black Araucana hens to begin the work on type and egg color I have one very nice Cuckoo Maran hen, a French type with feathered legs that lays my darkest brow egg here. I might have to try artificial insemination in the spring to try for a that too. My Serama's lay a nice brown egg, not too light but not real dark so I might have a chance for some chocolate cuckoo, Maran/Serama crosses that lay darker eggs. I can always work on the egg color by taking the better chocolate cockerels or chocolate carriers back to darker egg laying Marans. I love the recessive type chocolate. All it takes for a starter is a chocolate cockerel of the cross I want then take those chocolate chicks back into the breed I'm aiming for to work on type.