Arboreal Forums - Here’s a nice series of pictures illustrating the dramatic color change of a lovely green tree python.
Strange Color Change
Ball-Pythons.net - Take a look at this interesting story of an orangebelly ball python going through a rather dramatic and unusual color shift as it matures. The breeder suspected it was a random occurrence, until another baby from the same orangebelly sire began going through the same stages of color change.@ Ball-Pythons.net