While I worked out the workflow of Grease Pencil conversion to mesh and recolor with vertex color, its a chore.
I would like to try making an alternative Pencil tool that draws mesh immediately instead. I can not be the only one that would like this. It would help greatly in solving export workflow for game assets.
There was an article here in 2004 Tablet support: PyTablet v1.0a (Win)
but its gone