Different textures for different dyed leather armour

So Im trying to make a datapack for a server. and for that I thought of changing a specific type of dyed leather armor texture cause dyed leather armor is a armor that is very underated. Hopign to use ETF and EMF mods to add 3d textures to it as well
anyone know how to do this. Even though i know the base idk how to do it practically<:concern:1240468873883553863> . So anyone who know reply.