This might be a dumb question, but say an EE lays a green egg one day--will they ever lay maybe a turquoise one the next day? My understanding was that the blue color comes from the chicken's metabolism during the shell-making process, and the green is really a light brown coating that would otherwise make a pale brown egg. Does it happen that if a chicken had a diet change, it might make a more intense blue egg? The reason I ask, I have one EE that has laid two perfect pastel sage-green eggs in a particular spot by the door. Today when I went in to check, there was an egg in a slightly different spot (by the door, just in a different pile of bedding) which was just a shade more blue. I can't get the color to come out in a photo, but trust me, it's a slightly different shade when I compare them on white paper. I have a total of five EEs, all the same age, so it could be any of them. I know the green eggs come from Morgaine, I checked her vent and she cackles sort of uniquely. Do I really have an egg from a different chicken, or might they be the same chicken?