Gregorius
Terrarian
I'm not sure if this is the place to be asking this, but I've been working on a resource pack of my own on and off for the past year or so (and made stunningly little progress thanks to real-world interruptions and the lack of an attention span), and I've lately been seeing a few different packs lately that also edit the Shimmer textures of NPCs. I'm curious on how that's done, since while it's plainly obvious to see where NPCs' party variants are hidden in the files, I haven't found anything in the game's content or image files that alludes to Shimmered NPC sprites anywhere.