Re: Multi-tasking
Perhaps because QuickDraw supported colour, but only for the printer and limited to a few applications and The Mac II was the first colour Macintosh and it came out in 1987. They may have been some Frankenstein's monster consisting of a Mac 128K and external colour monitors set up before the release of the Mac II but if it existed it hardly had a commercial impact.
The Mac II was late because as Jobs believed in the purity of a black and white screen as he thought it best reflected the printed page, and because he wouldn't budge on this subject Apple had to fire Jobs to get a colour Macintosh out (see From Bedrooms to Billions: The Amiga Years), two whole years after the Amiga and ST.