Yoke colour has always been decided by the what the birds eat. If the hens were in someone's garden and ate marigolds they would have deep orange eggs. Clarence house are only mimicing what happens in nature - like flamingo's having the pink plumage because in the wild because they eat a lot of molluscs high in caratinoids. Zoos will feed them a diet supplemented with extra caratinoids to keep them pink.
Same difference.
I buy my eggs from a farm shop where I can see the free range chickens whenever I drive past.
Another assassination attempt on Donald Trump
The main room in your house...
