@Cypress Farms where are you in the world? I too have been a huge fan of Lemon Pyle Brahma's. I cannot say how they are created and wish I knew the secret, but I have been looking for breeders and I have found two possibilities. Let me know where you are and I will try to direct you to the closest one I have found. I haven't yet ordered as I am just about to build our coop but once done I am doing so.
