I have never seen a supermarket egg with a dark orange yolk. When we first started getting farm eggs, I worried there was something wrong with them, was how jarring the difference is.
As for tomatoes, yes, that was my point: supermarket tomato color is the product of manipulation. Color is a necessary but insufficient indicator of quality. (I'm not saying there aren't good supermarket tomatoes, if you buy them at a sane time of year).
You suggest that battery farms are boosting beta carotene to alter the color of egg yolks. Ok, I believe you. What I'm saying is that I doubt that the family in Michigan who sells us dirty chicken eggs in the summer is manipulating the beta carotene content of their feed to market their eggs; they don't do anything to market their eggs at all. Whatever they're eating, it's (a) naturally high in beta carotene and (b) sharply different from what battery hens eat.
As for tomatoes, yes, that was my point: supermarket tomato color is the product of manipulation. Color is a necessary but insufficient indicator of quality. (I'm not saying there aren't good supermarket tomatoes, if you buy them at a sane time of year).
You suggest that battery farms are boosting beta carotene to alter the color of egg yolks. Ok, I believe you. What I'm saying is that I doubt that the family in Michigan who sells us dirty chicken eggs in the summer is manipulating the beta carotene content of their feed to market their eggs; they don't do anything to market their eggs at all. Whatever they're eating, it's (a) naturally high in beta carotene and (b) sharply different from what battery hens eat.