pale or white yolks, sun and feed etc...

[angels4]

I found this online....Hope it helps.
www.blpbooks.co.uk/articles/egg_problems/egg_problems.php
And this............
YOLK Yolk color depends on the diet of the hen. If she gets plenty of yellow-orange plant pigments known as xanthophylls, they will be deposited in the yolk. Hens fed mashes containing yellow corn and alfalfa meal lay eggs with medium yellow yolks, while those eating wheat or barley yield lighter-colored yolks. A colorless diet, such as white cornmeal, produces almost colorless yolks. Natural yellow-orange substances such as marigold petals may be added to light-colored feeds to enhance yolk color. Artificial color additives are not permitted. Gold or lemon-colored yolks are preferred by most buyers in this country. Yolk pigments are relatively stable and are not lost or changed in cooking

 

[whatthecluck]

Interesting, I am switching their feed this weekend to all organic anyhow (I know thats not the difference just that I bought organic in place of what I have been giving once it was available)as the supplier had been out in the past, I am going to look at the ingredients and see if there is a difference. I know the layer mash I give them now has cracked corn and such and perhaps this one hen is just not getting to the dandelions as much as the others. I will let you know if the food change changes the white yolk to yellow! Thanks.