& i mean items that have a random chance of spawning with random color/texture on spawn

posting this here so more ppl that might wanna know can hopfully find it and a solution.
i could have sworn i know how years ago, but it seems i have forgotten & need a refresher more than likely from back in the build 31-34 days range >.<

anyways any support on this matter would be great help to me & other ppl in the future i hop & thanks ahead of time <3