We had masses of orcs, really like 50, that stood in for just about any type of army against the characters. Also goblins, the little yellow bastards!
As for the painting schemes, we used the colors indicated from the Monster Manual descriptions, which is how I learned what mauve and ochre look like.
The beholder below is one of my favorites, with his pretty blue eye!
Ha, we have representations of all the giant types, but had to use them all for whatever giant-type we fought at the time.
Too bad, Pleasanton Hobbies was our place for many years.