Can’t seem to apply vertex paint over material…
Here’s one.
Rendered on the left, vertex color on the right.
Because the vertex color was painted over white, mixing them needs a factor to not include backing color. Well, at least I’m not sure what would be more elegant way to do this.
I suggested a different solution on IRC, which was just to bake the textures to vertex paint and then do whatever vertex painting you want over that. Some people might find that suggestion useful, but I like yours better now that I see how you did it, JA12. Mixing out the white background of the vertex paint was the thing I couldn’t figure out.