Is it possible to change the appearance of an item instance with a script? Changing the appearance of a base item is easy, but I've found no way to do this with instances of items. Changing the base item's appearance changes all instances of the item, and that's not what I want.

I'm currently doing this by using a custom race without setting an armor race. This has the effect of equipped armors not showing up on characters that have this race (a custom skin has the appearance of the armors pieces I want), but this has some drawbacks, such as allowing multiple pieces of armor in the same slot, and that's not good for followers (for the player it's not a problem, because you can just un-equip an armor first).

Any help is appreciated