The good news is, that in my experience the OEGB show their traits pretty quickly. I have 2 week old chicks in the brooder with very distinct combs already.
my dau has a spangled pair of OEGB (pretty!) and my husband just brought home 5 OEGB chicks lastnight,
they are feathered but I know nothing about the breed!
The 5 chicks are fawn (I think)
Sorry I cant tell you much more then that. 2 of them have combs slightly bigger and one of the bigger combs is a few shades redder. One has a small comb not red at all I am thinking that she is a girl and the other with red bigger comb be a boy. But I am guessing as I said I know nothing about the breed. They seem to have quite a lot of personality. No crowing, very curios little things!