what colour eggs will i get ..?

[Spring Chook]

I have a pea combed ameraucana roo who is not pure, ie could have a bit of mille fleur and buff orpington in him (I hatched him from a light green/blue egg that came from a neighbour who has lots of different breeds).
I also have several pure breed black copper marans hens that I would like to mate with the roo. What are the chances of producing an olive egger?
be interested to hear your thoughts peeps

 

[WvChIcK-n-CrAzY]

I do believe the chances would be very good. If Im not mistaken, that is the combination they use to get olive eggs.