So I have Jersey Giants from two breeders and one flock the Rooster is displaying a golden flex on his wings and some is showing up around his neck as well ? These are the black version and I'm a bit thrown off by the flexing ? Is this a sign that they are not pure ? On some of the chicks the shanks are black with yellow on the underside of the foot , and some are black on the underside of the foot ?? I was under the understanding that they should be yellow if they are pure in all the aspects of color ?? Any Ideas ??