I'm having issues with my particle rocks being shaded differently than the rocks in the environment. The way I've solved this in previous projects is to hook the particle mesh up to the same material as the rock it's supposed to match. That way, if the environment artists update the shader, or change textures, my effect is updated as well.
How would I approach this with popcorn? The closest I've found is the tutorial about custom shaders, but I'd rather use a material solution.