I recently acquired an ayam cemani trio, not show quality by any means but the birds are in very good shape and are currently 4 months old, so I plant to breed them and try to get some show quality birds with the help of culling and the supposed rule of 10. Anyways. I've read that literally everything has to be black with the ayam cemanis, including the tongue. However, other sources have told me that it's ok as long as it's not white or pink. The tongues of my trio are all a dull grey, with the hue of an even mix between white and black. Nobody was cooperating so I couldn't get pictures. Is an ayam cemani with a grey tongue desirable, or is it outside of the standard of perfection? Can the grey tongue trait be bred out somehow, what are the genetics behind it?