Your Question

What tag is used to add recipes removing color from blocks using soap?

Detail

A bit of a niche situation here, and I know very little about modding, so I'm probably missing something important. I have a modpack using Chipped and Supplementaries together, and have noticed that many of the Chipped variants can be un-dyed from their colored to non-colored versions, but the type of block remains the same. However, not all of the terracotta, concrete, and glazed terracotta variants seem to have this crafting recipe for some reason.

I would like to add the missing recipes so that each colored Chipped block in these sets can be "un-colored" using soap into the colorless variant of that type of block. But I can't find any tag for these that would allow me to do so (e.g. "chipped:yellow_terracotta" would allows any yellow terracotta type for that recipe, not only one of the matching terracotta variant). Perhaps if I understood how the soap recipes are generated, I could find a workaround. I'd prefer not to add 15-16 recipes for every missing Chipped variant if possible, that doesn't see like a very neat solution. Any help would be appreciated!

There's a blacklist for block types in the configs

I understand that, but I'm trying to whitelist items for soap cleaning. I can't seem to find a way to do that without adding hundreds of custom recipes, though. Is there a method I'm just not seeing?

You can remove stuff that's blacklisted. Colour detection is automatic. If something is not detected it probably means it's not meant to be recolored. If you want to add some extra recipes with soap you can just do it with some custom ones like normal