"The color of the yolk has very little to do with its nutritional content. Actually, yolk color depends almost entirely on pigments in the food chickens eat. If

"The color of the yolk has very little to do with its nutritional content. Actually, yolk color depends almost entirely on pigments in the food chickens eat. If a hen eats plenty of yellow-orange pigments called xanthophylls, those pigments will make a darker orange egg yolk." I've adjusted my previous bias thanks to this article.