So I have extended (substitution alias) vanilla Cauldron so I can use it to produce a few things in my mod  ike various magical items, magical brews and even stuff like beer wort etc. 

 

The block is already extended and functioning. I'm just gonna add the mixing system in conjuction with a custom  IRecipe.

 

But I wanna be able to change the color of the water in the Cauldron to whatever colour I want based on what's in it.  I want ideally something like R G B  (0 - 15  maybe) as part of the custom recipe straight from Java.

You need to specify a tint index for each element of the model that you want coloured at runtime and then register an

IBlockColor

for the

Block

by calling

BlockColors#registerBlockColorHandler

in init from your client proxy (or a client-only class called from it). If you want to colour the item model, you also need to register an

IItemColor

with

ItemColors#registerItemColorHandler

.

 

The wiki explains the model format here.

 

For examples of

IBlockColor

, look at the vanilla implementations in

BlockColors

or my mod's implementations here.

so  kinda like Leaves ?  I do something similar for  leaves.

so  kinda like Leaves ?  I do something similar for  leaves.

 

Yes, it's the same system.