Hey everyone, figured I'd provide an update.
It turns out that whatever is causing the egg to appear green is lethal. After my original post I had a second, smaller egg that began to candle green, and both eggs died (smaller egg died on day 37, bigger egg day 41). It does seem to be the case that it is indeed an increase in B2 that is causing this, as the albumin and yolk had both seemed to solidify beyond the point of being consumable for the snake, and the dead eggs did not create an odor.
So while the B2 in and of itself is not necessarily harmful, the eventual impact it has on the snakes ability to absorb nutrients seems to be fatal.
Hopefully this info is helpful. Let me know if you have any questions.