Yolk color in eggs is directly linked to the diet of the hens. Eggland's Best yolks will usually be darker than ordinary eggs because our hen feed includes corn and alfalfa meal. Eggland's Best also incorporates approved natural-source pigments in diets derived from marigold petals or red peppers. Yellow and red pigments are related to Vitamin A and Lutein and are nutritious. Our eggs are routinely screened to ensure that the yolks have a deep yellow color.