Dyeable Wood Using Procedures

I don't know how I did it before, but I was able to make procedures for dying multiple variations of a certain wood block with different colors of custom dye bottles, and then also making it so that you could strip the color and return it back to its original state. I figured out the first half easy enough but i have no idea how to remake the procedures to strip the color without having to manually check for each colored block and its uncolored counterpart which is very time consuming. I have a pastebin of the old java for the process. https://pastebin.com/wMKPNxD4 and I'm seeing a lot of things for variables which I don't remember what the purpose of them was for. The "Paper" type of wood is the blank wood, and all the fruit named woods are the colored ones. But it seems like I had to just make a procedure like this, but reverse. If anyone has some insight please lmk, I'm stupid lol.