We believe the darker brown speckled eggs have a Black Copper Maran father, have asked what the likely father of the green egg is (perhaps Ameraucana?)
Can't remember where you got these eggs to hatch, what color they were, and what were the possible breeds in the mix.8 Ameraucana mixes
That sure looks like a blue shell, can confirm by peeling the white inner membrane immediately out when breaking an egg to eat.
One of the parents had Ameraucana or Easter Egger in it's lineage.