Brute Force Colors
The original Macintosh reserved something like 22K of the RAM for screen memory. I remember reading a little tech note about page-flipping: where you can pull in another 22K of RAM for a secondary screen buffer, write to it, and then with a single assignment to a 32-bit memory location, point the screen refresh to your secondary screen buffer. If you did it during the vertical screen blanking interval, pop!, instant "page flip".I was playing around with 68K assembler to test this out: cleared one screen buffer to white, drew a diagonal black line — cleared the other screen buffer to white and also drew a diagonal black line ... a mirror of the first one though.Watching it page flip between the two screen buffers for every screen refresh caused me to notice something interesting: you could actually get a pseudo 50% gray where a black pixel and white pixel shared the same row and column on the two buffers.It might have made an interesting demo, but eating another 22K on a computer that was struggling (not the lower config models) with 128K seemed like a bad design decision. I suspect too, at 30 FPS, the gray would have been a bit "strobish"?