For example:
Change the Lithuanian monastery to pagan shrine, while still having the regular skin for Slavs, Bulgarians, etc.
From my understanding this isn’t possible with a pure graphics / cosmetical mod. Is there a way to set each civs building skins separately?
If it’s just for an scenario, you can use triggers to change the standing graphics and death graphics of a building. I would recommend using Aoe2 scenario parser, so you don’t need to painstakingly do it for each building, if you want to do it for many buildings, but you just want to do one of them, so I guess it’s good.
Modify attribute/standing graphic and Modify attribute/dying graphic is what you want
If it’s for a data mod
I believe changing the Standing and Dying and undead graphics of each building of each civ should do the trick, but don’t quote me on it.