anime history - When & where did the unnatural hair color aka You gotta have blue hair trope originate? - Anime & Manga Stack Exchange

I specifically want to know which manga or anime started the trend, so I can reason from there to the how question, in order to not make general assumptions. There was a time in manga/anime where

Did the trope of 'You Gotta Have Blue Hair' originate in anime and manga, or can it be seen in enough older works to determine a different origin? Is there any official

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Did the trope of 'You Gotta Have Blue Hair' originate in anime and manga, or can it be seen in enough older works to determine a different origin? Is there any official