Yes, those are mine! They do look like Ameraucanas, I'm careful never to mix the chicks because I doubt I could separate them with certainty when they mature. The Ameraucana genes are strong in these birds. If you want to compare their combs with a true pea comb from a show winning Ameraucana, I think you may see some differences. I don't show my birds, but it would be tempting to put one into a show and see how it does against really good black Ams. It would not likely win, but I can't see anything that would disqualify it from being shown as an Ameraucana.
One reason for using a white egg layer for the maternal parent is to remove some of the residual green and provide a "purer" blue. Some of my Am eggs are more turquoise than sky blue. Personally, I think the turquoise eggs are gorgeous, as are the very pure blue ones. They definitely go lighter in color faster than purebred Ameraucanas, though I think a lot of that is that they lay so many more eggs and they simply run out of blue pigment (hardly a fault, right?). So I don't think you will get green eggs from these. I have a few "olive eggers" left, they hatched on 6/3. These are definitely gonna lay some shade of green. Green egg color is highly variable. They hatched from olive eggs that resulted from a cross of a Cream Legbar and a Welsummer. They look a lot like a cream legbar, another case where I have to keep them separate or band them.