You seem very knowledgeable about many things.
I travel alot and something that has puzzled me is eggs. The nearer the equator, the darker the yolks. In Brazil, the yolks of eggs are deep orange. In Canada, a very pale yellow. The yokes in Texas are are a deeper yellow than those produced here in the Dakotas.
I know this is a rather silly and unrelated question, but I am curious.
Just a random thought from this very cluttered blonde mind.
I always knew there was a difference in the taste of brown eggs and white eggs. Science told us they were IDENTICAL, right down to the % of fat. Subsequently Science told us that brown eggs had more Omega 3 fatty acid than did white eggs. Even later Science told us that human beings can taste fat with fat sensing nerve endings in their tongues.
I am certain that eventually Science will admit that some of us can taste the difference between brown eggs and white eggs.
I've had farm eggs (brown)here in NY that have had very deep gold yolks. Yet it seems that the white eggs always have lighter colored yolks.