Snow Boas

I recently stumbled upon the amazingness that is the snow boa. After some quick searches, I noticed that some had bluish hues, some pink, and others were more crisp whites. Can anyone confirm/negate my observations? Also, how do snow boas' colors change as they age?

Any help would be appreciated, as snow boas seem to be a rare thing in the snake world.

Thanks,
Dennis

In my experience depending on the boa/age the colors can vary from white to yellow to pink. They are rare because there are several genes going into making them. Snows are one of my current projects that I am working towards. I don't personally own any yet so take my experience with a grain of salt.