Not sure if I should worry that my chicks comb isn't pink/red

[Dunhloke]

So I have several chickens a purchased from TSC and the all black one is supposed to be an Asian black (blue?) And we were told it was likely a rooster. I've attached images as I've been reading that your chicken Combs should be pink or red and yet this chick barely has a comb compared to the other chickens I have and it's clearly not pink or red. Should I be concerned about this or is it too early to tell with these things. I'm just worried that they could be sick?

 

[sourland]

Chick is in apparent good health and most likely a pullet. In the second picture the chick in front of her is most likely a cockerel.

 

[Dunhloke]

Chick is in apparent good health and most likely a pullet. In the second picture the chick in front of her is most likely a cockerel.

Thank you!