It would really depend on what had gone on to create the EE and OE. I have several hens that would qualify as typical EE: blue eggs, muffs, small combs, but I know they are really Orpington/EE crosses. They all definitely have a tan egg gene that may or may not come out in their offspring depending on the rooster they were bred to. But if I just sold them to someone and didn't mention their background, you'd just assume they were EE and expect blue eggs, which you'd get, but possibly not get blue egg laying offspring from them. Since the primary criterion for an EE or OE is the color of the egg the hen lays, what other genes she may carry and how those will express themselves in her offspring are really a crap shoot unless you know a lot about the ancestry of the hen in question.
