If the roo is a barred rock and the mother a EE or Americuana, will the chicks lay green or brown eggs? I heard that the blue egg gene is on the roo side and the roo must be the blue side of the cross. Is this true? I have about 150 eggs in the incubator and I am already thinking about what color their eggs are going to be. Talk about counting your chickens before they hatch. I am counting their unlaid eggs before they hatch. Breeding chickens is like a illness. a really good illness.