Marans chicks- mystery colors and gender? Wheaten?

[everythingjane]

I had the chance to get some odd colored chicks that hatched from black copper marans and they were so pretty I couldn't resist... I'm trying to determine if they are a recognizeable color or just pretty sports who should lay dark eggs.. Hopefully they are all pullets??.. The smallest/youngest is a little harder to tell both gender and color (pics farther down)...
The white/columbian colored one is a Marans/Ameraucana.
In this first photo, are the two in front wheaten marans?

I'm really confused about this little blue based chick on the right in the next two photos.. Also out of Black/blue copper marans.. My only guesses are maybe an overly copper blue or a blue wheaten (if it's a rooster)?
This one is younger than the others.. not exactly sure on their ages..

Besides color, are genders apparent?
Thanks!

 

[monarc23]

the pretty blue based one (which is awesome looking) l ooks a lot like a cockerel? Other than that the others i dunno

 

[Wynette]

The one on the far right appears to be a blue wheaten and looks like a cockerel; the others look like pullets to me.

 

[everythingjane]

UPDATE:

The two lighter browns are Wheatens hens. I recently took photos of the blue based one because he's still a mystery.
I had thought he was blue wheaten, but I think his chest would be blue instead of brown?

Any ideas?

 

[ve]

I think he is blue-copper.He has one shot E-birchen and one wheaten.This make him more brown on the chest.