Ping.
BTTT
When I lived in New Orleans, back in the mid 70s, there was a man with this condition...bluish, silvery skin...who would come into the library where I worked every now and then.
The first time I saw him was a shock, and the others explained what little they knew....
Then, a few years later and up in Ohio by then, I saw an article about this family in the paper, but forgot to save it.
This answers my long-time curiosity!