Pullet on the right in the last photo has light brown eyes, so she has the Mottled Gene......cannot show her, but she may lay some split for Mottled chicks.
I keep waiting, but so far, no mottled.
As Monte said, he has raised them for a ba=zillion years and never had a buff, an Auburn nor any other color, but black.............and a mottled .
Any other color is a result of inbreeding.
I think you ment to say cross breeding? Inbreeding would not result in new colors showing up.
bigz