Toxophilite
Silver Supporter
That is very true!! I've noticed that on some of mine, I could probably pry out easily, as they don't seems to be that much bonded, though never tried. Even a half grind away and more epoxy is better than buying stone.Before you go removing paver stones I would try and find an epoxy color that works with your stones. Then use a Dremel tool to grind out the wrong color epoxy and fill the hole with a better color. It may be less work and expense then replacing many stones.
Worst case it does not work well and you end up replacing the stones anyway. It is worth a try.