Have trial chambers look more run down

Have trial chambers look more run down

This is mostly for the outside and entrance of the trail chambers but as cool as the outside is, the trail chambers stick out like a sore thumb. while I can see this is useful for people to spot them it would be cool if the outside was generated with some moss, stone/deepslate, vines and maybe even some new mossy tuff variants so it fits the surrounding cave. This could also add to the lore to show the age because right now they look brand new as they are built with shiny copper and chiselled tuff.