Orpingtons produce brown eggs.
I am looking to produce one that looks like the orpington carrying the blue gene (and of course the brown), but my hope is that it will successfully carry the blue. I am concerned about her getting a blue gene because I just have a hatchery Ameraucana cockerel. These are my first pullets coming into lay with this Cockerel and I if these make a green egg this means my cock has 2 copies of the blue gene!
Then I can work on my blue to blue birds. ;-)
But I am interested in enjoying the look of the chocolate orpington with poofy cheeks and a different colored egg.