I've been out of modding and skipped 1.8, my 1.7.10 mod had textures that changed depending on the NBT of the item. Can someone point me to the right direction as to how to add this in 1.9?

 

I had something like this: http://i.imgur.com/UrvlkJ4.png

 

Thanks!

So I have 7 heads and and 6 bodies, this means that I will have to make 42~ item variants of each head with each body?