ok so I am getting Bright yellow yolks from my marans and my leghorn. My EE's lay a nice orange yolk but they aren't consistent in their laying . they are all in the same coop. I feed them layer pellets, scratch, and table scraps (whatever the kids didn't eat) and whatever they find on the range. they are spoiled to death I heard that corn will darken the yolk but isn't it just supposed to be dark??