You can’t mess with the color of models that already have textures, let alone materials, right?
While I was working I found a strange mesh in the toolbox. When I loaded it into my game, it completely lacked a TextureID, and also I found it able to have its material edited. How is this possible? Here are examples: Lacks a TextureID Has color anyway (and metal material) Neon material
How could I go about replicating this phenomenon?
In Blender, there’s a mode you can use called “Vertex Paint” that you can use to color specific vertices of your model.
Not sure about other modeling software though, they’ll probably have something similar.