When asked at shows about what colors corns come in my response is, "Every color but blue and green. And that is why I want a blue one." LOL
Lacking the ability to make blue pigment, a rare color in nature, corns will most likely never be true blue. But they may be able to "look" blue in the same way bluebirds and the Morpho butterrfly do, through the use of light scattering iridophores in the absence of xanthopores. But that's probably wishful thinking on my part.
A girl can hope.....
Terri
Side note: Lavender is an example of Iridophores doing their magic. I was delighted at Tinley this year when I saw Lavender Scaless Corns. They look exactly like an Okeetee; no Lavender coloration in sight. I thought the breeder had made a mistake in labeling the bins. But he assured me that they were in fact Lavender and all the homozygous Lavender offspring looked that way. Which tells us that the scales obscure or scatter the underlying pigmentation in this morph (something we at some level already knew or suspected.) This gave me confirmed hope for the possibility of a blue or green corn some day.:wavey: