With simple 2D item models, the texture can be coloured very easily with the getColorFromItemStack method, but this doesn't appear to be called, when a 3D model (json or obj) is used. Can the textures of those be recoloured in a similar fashion? Do I need to implement my own ISmartItemModel and IBakedModel for it?

Yes.

Alright, thank you

If you're using a JSON model, you can specify the tint index of each face of each element in the model itself (see the wiki). This will allow that face's texture to be coloured at runtime.

 

There's not currently any way to specify tint indexes in OBJ or B3D models (see this issue).

I stand corrected. Thanks Choonster added to my knowledge on Minecraft JSONs and bookmarked.

This is good to know, but what I was after was recolouring the model dynamically, based on the ItemStack. Anyway, implementing a custom IBakedModel works great, even with OBJ models.

This is good to know, but what I was after was recolouring the model dynamically, based on the ItemStack.

 

That's exactly what I was telling you how to do, though like I said it only works for JSON models.