> The Blue Fugates are shown in this colorized black and white photo. Date unspecified. Original source unknown, via ABC News
It’s somewhat dishonest to illustrate an article on color with a photo that was colorized by someone we don’t know at an unknow date-- i.e. we don’t know anything about how they decided which shade of blue to apply on their faces. So the only interesting information caried by the photo, the shade of the blue color, has no source.
Also, this appears to be largely copied from this ABC News article: https://abcnews.go.com/Health/blue-skinned-people-kentucky-r...