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There will be no sex-linkage in this cross. You would expect all blue offspring, probably with some degree of copper in the hackles. The would probably look something like Blue Copper Marans in their color, with maybe less to very little copper. The beards, muffs, and pea combs from the Ameraucana will probably be dominant, assuming your Ameraucana is pure for all of these traits.
I think the following information is all on this thread already, but here it is again.
There are a few people experimenting with F2 olive eggers, which can work.
The convenient part of breeding a pure Ameraucana, which theoretically carries 2 copies of the blue egg gene, is that ALL of it's offspring with a Marans will give you olive eggers. The offspring would have 1 copy of the blue egg gene each, which is all you need to make olive eggs.
When bred together, 2 olive eggers will give you 25% with 2 copies of the blue egg gene, 50% with 1 copy of the blue egg gene, and 25% with 0 copies of the blue egg gene. In other words, 75% of the second generation should have at least 1 copy of the blue egg gene, and thus be able to lay an Olive egg, if the dark brown genes are still present.
The part that isn't as easy is what happens to the brown genes in the second generation. There are dozens of brown egg genes, so they can combine in all sorts of ways. Some darker, and some lighter than their parents.
The handy part about the pea combs in Ameraucanas is that they are almost always inherited along with the blue egg gene, so you can often tell by looking at the comb that a bird does or doesn't have the blue egg gene. It's easier than waiting 6-8 months.
Some folks cross their olive eggers back to Marans to keep the eggs dark. Once again, selecting the chicks with pea combs is the best way to narrow down the blue egg gene carriers. Only half of the offspring of an olive egger x Marans cross would give you olive eggers.
Take pictures, and keep us posted on your progress!