I have one strand of pop beads and love them. Although they aren't the same ones that I played with as a child, they're close enough. I can't part with them. But I do remember the clip earrings that you could pop different beads onto. They weren't quite the same as the necklace ones. The earring ones only had the hole in them not the shaft. Avon also made ones that looked like flattened shank buttons that popped onto a back. I think that you got 4 different color sets when you ordered the backing. If my memory serves me correctly there were several different sets you could get to fit the backings. Boy has that ever brought back old memories.
p.s. the ones I have are pearly pale pink