Update- caique mutation

I managed to track down the original person that first posted the picture of the supposed blue mutation caique. Unfortunately the person has been unwilling to talk, other then to say that they had recieved permission from the owner to post the picture, but further information regarding this bird is, in a word- taboo. Very unfortunate as we can not really confirm or deny this mutation at this point, not knowing where the bird originated from, who bred it, etc etc etc. Pity, as this could be extremely useful knowledge to have down the line in regards to caique genetics, mutations, etc etc etc.
People, if you have information, don't be frugal. Share it. Aviculture is in its infancy and growing every day, and if everyone hoarded all their bits of knowledge, our community would be shattered. Its not the people who suffer, its the birds.
John McMichael of thecaiquesite.com has commented on the possibility of the blue caique mutation, and believes that it is possible, and sites the 'orange tint' on the nape as being a result of different pigmentation on the bird.
As such, there is no further information yielded about this bird at this time. Such a waste- there is such potential for caiques and enthusiasts to learn more about this intricate species.