... and there's no way to select in in BodyShop, even if cloning a vampire sim.
However, the vampire mask can be removed if you click the "clear" slot in the full-face makeup section.
Edit:
Setting the flags value to zero it's all it takes for the Zombie and Alien skins to appear in the game catalog
Although the vampire overlay isn't a skintone, there's an odd SkintoneXML entry named "Vampire", probably a left-over resource before it was categorized as a texture overlay.