There are a lot more new Void Elves in Telogrus Rift than there usually are.
But to the question, Vanaelia won’t. The only thing i might change is her eye color, specifically from the default to the newer purple one (because that’s closer to Void stuff).
Mind you, I’m glad people get to play what they want to play, and maybe if I made a newer, younger void elf, they might keep one of the blood elf skin tones. But Vanaelia is who she is, and that’s all there is to it.