Thread:Adespoton/@comment-31714002-20200218220244/@comment-24886041-20200218221826

Ah; I thought I was using the same source you did; it's outlined here:

https://en.wikipedia.org/wiki/List_of_monochrome_and_RGB_palettes#16-bit_RGB

I'll add it to the citation list.

It is indeed a 15-bit implementation, with the extra bit used only starting with Mac OS 9 IIRC. "Thousands of colors" as shown on System 7 through OS 8 were all using the 15 bit pallette.

Feel free to update the entry if you feel it confuses things too much.