[T.B. Yoits]

Paging Mr. Paul Karason

https://www.news.com.au/lifestyle/health/real-life-blue-man-paul-karason-dies-aged-62-turned-blue-after-drinking-colloidal-silver-to-help-skin/news-story/69be4c5d3bd85eca24fb43fec30e4321

[Jamestown1630]

And then there are the ‘Blue People of Kentucky’:

https://en.wikipedia.org/wiki/Blue_Fugates