Lavender streaks, for instance, might be portrayed as rebellious in black hair, but mermaid-y in blonde hair. And these streaks of color aren't just popping up in live action films, either.

Charli D’amelio visited hairstylist Greta Veshta to add blue streaks into her ... It appears as though the colorist had to bleach parts of the performer’s dark hair before dyeing it blue.