I have a true araucana roo that I let cross with my heavy laying hens.....here is my question If the hen is a leghorn will the offspring lay blue eggs? I also crossed him with my wyandotte, isa, and rir hens....will the offspring lay brown eggs or will they be blue? You should see some of the offspring! They are beautiful. I would like to breed for all blue and olive eggs. I do not know much about genetics so any advice would be helpful.