Could you replace the input dye items for the Apothecary Mortar with the item dye tag? (e.g. tag:forge:dye/red).
Right now only the vanilla dye items can be used and not the dye items from other mods.
I would really appreciate that.

For Bone Meal and inc Sacs: In 1.15 these items are not longer dyes. I'm not sure if you want to use these specific items for the recipe (if yes for those nothing has to be changed) or if it was planned to use black and white dye for the recipe. In that case the input should be changed to the dye tag too.

I am in favor of doing this, but it's going to be a bit more involved and it probably makes sense that I create a separate recipe type for this as well to make it cleaner.