I guess I still don't understand exactly what a scene is:
"scene" saves and restores scenes. A scene consists of the camera
view, all object activity information, all atom-wise visibilities,
all atom-wise colors, all representations, the global frame index,
and may contain a text message to display on playback.
I get all of that except colors. How does that work in terms of "atom-wise colors" ?
When does the scene change colors? That is, what commands would I issue that would set colors that would be recalled by a scene change?