(2022-04-04, 20:22)Orion Pobursky Wrote: The problem is that they are very much intertwined. Yellow rubber is not the same yellow as yellow plastic. I'm not convinced there is a good solution to this.
Surface finish, on the other hand, could be specified with some sort of material tag.
Yellow slope surface is, however, the same yellow. And yellow rubber is already defined by the !COLOUR meta, so if that is indeed the necessary way to do it, then we can consider rubber to already be solved.