[Chimera-users] Showing more than a single centroid trace

Hello: I would like to show several centroid traces for model 0, 1, 2, .. Actually, it is the same model, differing, in the movies, for the protein fluctuations. What I did, was to superimpose movie for model 1 to the already done movie for model 0, hiding the protein for model 1 and choosing a different color for the centroid. Doing that, the instant position of the centroid can only be color-highlighted for model 0. I wonder whether there is a better procedure to show the various centroid traces above a single protein model. thanks francesco pietra