color of a chicken egg merely denotes the breed of chicken that
produced it - there is no difference between white, brown, tan,
speckled, and blue in terms of nutrition. (Bet you didn't know there
were blue chicken eggs, did ya?)
I once spent an afternoon scrambling different kinds of eggs.
I have found goose eggs to have a strong yolky flavor - like the yolk
of a hard-boiled egg. Turkey eggs are delicious, with a rich and mellow
flavor. My "Omnipotent Heritage Egg Scramble", using eggs from Cotton
Patch Geese, American Bronze Turkeys, Old English Bantam Chickens, and
Dominique Chickens, was awesome. Also, you cannot imagine the insane
difficulty in cracking a goose egg.