basically BPs just have more different pigments than humans do, and for the definition its good enough if one is knocked out. which gives you a variety of things that can justifyably be called albinos, while in humans or animals that mainly only have one pigment there only is one albino version.

you knock out the black pigment and its an albino, which leaves you with a white pigment, a yellow pigment, and a light brown pigment.

judging from the optics, i would say albinos have the white and the yellow one. lavender albinos only have the yellow one which causes the skin to get translucent and the color of the blood makes the lavender hues. and toffe and candy and caramels have white, yellow, and light brown.

oh and.... if you get rid of all pigments you would not get a white snake with red eyes, the really white ones really have a lot of white pigment in the skin. With everything gone, it should look pinkish/lavendery with red eyes.