I have 5 GPHs I got from McM. They are supposed to be 2 guys and 3 gals. They are turning 10-weeks and still look the same. Is this normal? If so, when do the boys start getting the darker, richer red saddles and hackles? My son is supposed to have a trio out of these for this summer's 4-H show and I am getting a little concerned. Thanks anyone who can help.