Not on my boys and I've got 3 right now. 6 females. The early white is completely irrelevant and will molt out by the time they hit their teens, in MY experience. My boys chest are very dark now.Lots of white on the breast is an indicator of a possible cockerel, but comb size and color are more reliable.
Even color is tricky in this breed for gender assessment. Since the guys and gals get the same speckles. There are varying shades of red, brown, and maybe more orange... even between my females. No two are exactly the same. Raise enough and you will see sooo many different tail feathers and rates of feathering even in the same breed and gender. The different tail feathers at least in THIS case aren't yet saying anything.

My boys are completely aloof... and when younger the females had me second guessing the "friendly" factor as well (which I disagree with peeps about Orpington and Swedish Flowers being "friendly"). But as they have come closer to laying (1 or 2 have started) they have sure calmed down and friendly'd up a TON!

I will call them two female.

Of course Jed is correct that late bloomers are ALWAYS a possibility! But I'm not suspecting it here.
