These differences in color have nothing to do with quality or nutritional value — they're simply a factor of the type of hen and what it is fed.

The color of the eggshell depends on the breed of the hen. Some hens lay white eggs and others lay brown ones. There is no difference in nutritional value or taste. The price of brown eggs tends to be higher only because the hens that lay these eggs are larger and require more food.

The color of the egg yolk can vary depending on the type of feed given to the hen. While hens given wheat-based feed tend to produce eggs with lighter yellow yolks, those given corn-based feed tend to produce eggs with darker yellow yolks.

Whatever the color, shape, or size of the yolk, the quality and the flavor remain the same. 

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