Hi Vincent,
Sure, it's just the "rainbow" or "color sequential" command described here:
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/color.html#sequential>

Examples:

rainbow #1 structures palette RdYlBu
color sequential #1 structures palette accent

I hope this helps,
Elaine
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Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Feb 10, 2022, at 7:32 AM, vincent Chaptal via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Dear all, 
I have a pdb with 20 submodels inside (NMR type) that opens well in chimeraX. 

I would like to color each submodels individually, using a palette accross these models. 
For example from model #1.1 in red to model #1.20 in blue. 

I couldn't find the command online, does it exist in ChimeraX? 
Thank you
Vincent