TBH I have no idea. Just mentioned the Arthur C. Clarke as an amusing related anecdote.
The technology might have been developed after he wrote it, idk.
Tbh I was also just mentioning what I mentioned because I thought it was amusing/interesting/novel or uh, thought it would look good to mention or something
What you mentioned was amusing
Like, I think taking some hormones can make one's skin produce more melanin .
Idk if one has to keep taking it or not to keep it up, but from the pictures it looked fairly thorough.