I have a barred rock rooster (with yellow legs) and a mutt hen (with grayish legs). The chicks that hatched out of this cross had yellow legs to start. Now, of the four pullets I kept, just one has yellow legs and the other three have turned the grayish color. The pullets are now 12 weeks old. Will the leg color continue to change until maturity or will they keep what they currently have? Just wondering. They are just a backyard flock and I'm just a curious old lady. Since I'm a newbie, I first thought that leg color in the flock was because of diet. Like, the grayish-legged ones had some kind of deficiency. I'm almost embarrassed to admit that. Thanks to BYC forum, I'm learning a lot.