The artists at work wish to be able to modify their prelit scenes by tweaking vertex colors. However, if they move a light or re-light the scene for whatever reason, they would like the color tweaks to remain intact.
To do this, I'd like to be able to store a second color per vertex (or even a "tweak" delta value). Although I can use the Maya UI to add a vector attribute per vertex, and can do a similar thing through script, I'd ideally like to do this in a plugin. I also need some way of altering the rendered vertex color based on this extra tweak color.
Well, I hope that makes sense to someone, and thanks for any ideas you can chuck this way.