U.S. consumers have become accustomed to factory farm eggs, the yolks of which are usually quite pale. It is true that hens raised with good access to pasture generally have deeper colored yolks. There are also additions to feed that farmers can use to heighten color. Here is a decent article on the topic.
https://chickenmag.com/egg-yolk-color/
False premise. Pale yolks can be found ex-US and bright dark orange yolk can be found in the US.
The color comes from stuff the chicken eats. Feed them wheat and certain bugs, you get paler eggs. Corn, yellower eggs. Alfalfa meal, or food with yellow flower petals mixed in, rich dark yellow or orange.
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