Really, a piebald - aka pied - BP is no more different from a normal BP than a piebald - aka pinto - horse is from a bay. Piebald horses have been around for much longer than piebald snakes, with no color-related issues at all. Now, horses and snakes are a bit different, but I don't think any color-related health problems from piebald are likely to appear. Piebald animals have been appearing throughout nature for a very long time. The health problems that they have are directly related to the fact that their markings don't blend into their environment very well, which makes it difficult for them to hide, and other animals find and eat them. Personally, I wouldn't use any lights at all, but I know some people like them.
A related note on animal intelligence: I've seen a normal doe hide a piebald fawn in a logged-off unit full of white tarps, where slash piles had been covered up to keep them from getting wet prior to burning. Anywhere else, that fawn would have been glaringly obvious. In that one place, where they happened to use white tarps - usually they didn't use white - it was invisible until it moved. The doe stood out like a neon sign against those tarps - but her fawn was hidden.
