First of all, that was a background character with zero dialogue (if we ignore her singing Jedi Rocks). Second of all, I’m not even sure she’s human.
Coming back to the comment of hair-dyeing, I’m annoyed by the fact Disney has introduced main characters with weird hair colors, while Lucas never did that. Don’t get me wrong, I’m open to new stuff in Star Wars: new spaceships, new planets, new lightsabers, etc. I’m perfectly fine with that. But outstanding hair colors feel so out of place in Star Wars, that stuff should belong in anime.
I think my distaste of anime hair in TLJ is no different than the fan reaction to the toilet humour in TPM. On both occasions we got something that didn’t feel like Star Wars at all, and fans were pissed off.
I wasn’t even a huge fan of the hair color choice myself, but holy hell this is just…I don’t have words.