Cochin Identification

[MamaHenMyers]

Can anyone help me id the type of Cochin these guys are? Hatched from eBay eggs just labeled large breed cochin. Hens are all black one Roo hatched and I am struggling with id now.

 

[The Moonshiner]

The male is looking like a blue birchen that is silver/gold.
He could be hiding other pattern genes though.
I won't guess on the female she could be hiding a lot.