Help with Item Decorators?

[Hipposgrumm]

I am trying to figure out how to use item decorators. I want to overlay a texture onto another texture under a certain condition, but I can't seem to be able to find ANY  documentation on Item Decorators, the only example I can find is the Forge example on GitHub which doesn't have what I'm looking for. Can anyone provide some insight?

[ChampionAsh5357]

23 hours ago, Hipposgrumm said:

I want to overlay a texture onto another texture under a certain condition, but I can't seem to be able to find ANY  documentation on Item Decorators

Could you better define overlay a texture onto another texture? Do you mean modify the item model itself?

[Hipposgrumm]

24 minutes ago, ChampionAsh5357 said:

Could you better define overlay a texture onto another texture?

I basically want to add an overlay from a texture I have in my mod onto a texture that already exists.