psczvnadfjk··on Seiko Originals: The UC-2000, A Smartwatch from 1984> 16-bit machines (Apple Mac, Amiga, Atari ST)(small nitpick) These platforms all began with Motorola 68000 which has a 32-bit ISA.
psczvnadfjk··on Mac OS 9That seems similar to the "perwinkle blue" that was used as the default background in Apple IIGS ProDOS16 / GS/OS. In that case it was done with pairing white pixels with blue pixels.