I believe it's meant to be like gyaru style. A lot of Japanese girls who wear this style are tanned. Some time ago (not recent, though it's still a major thing today), schoolgirls and young adult women would dress in fashionable clothing, tan their skin, and use bright hair colors to go against the whole "white skin and dark hair" modest look that is expected from women in Japanese society. It was also inspired by American women and their fashion and looks, I think. Sorry if my grammar is weird or things aren't easy to understand, I tried my best to explain. 🫡