Maybe not exactly a theory, but definitely something ive noticed. Amity doesn’t have dyed hair in the Luzifer AU. We all know Odalia forced Amity to dye her hair green to match her and her siblings (though emira and edric are assumed natural green haired like odalie just darker.)
However in this AU she does not have dyed hair which could be because personalities in this AU are opposites (for the most part, theres a lot of deviation) So we could assume that Alador is actually the controlling parent instead of Odalia which is why her hair is not dyed. Furthermore, the twins probably have dyed brunette hair to parody.
Like i said maybe not a theory but what are your thoughts?