I have a 6 month old hen and idk what breed she is she lays a green/blue egg. I was thinking a cuckoo maran because she has a faint gold tint on her but she layers the green egg.
You're right on her looking like a marans! Many designer "olive eggers" are mixed with Marans and an Ameraucana or Legbar. I'd be leaning towards Cream Legbar being in her somewhere down the line because she has a single comb and the pea combs that most Easter Eggers and all Ameraucanas have is a dominant trait. Overall she's a pretty mutt