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?

Robert M. Hanson
Larson-Anderson Professor of Chemistry
St. Olaf College
Northfield, MN

If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900