[Chimera-users] After fitting a PDB into a cryo-EM density, is it possible to color the PDB atoms by the local EM density in the cryo-EM map?

Dear Chimera-users, I have several cryo-EM maps of an assembly process and a PDB of the final product; what I want to do is to have a visual depiction of how the local EM density around structural elements in the final product changes over time. After fitting the PDB into the cryo-EM density, I am wondering if it is possible to color the PDB atoms by a reference EM density at each point. For example, I want to color every residue that intersects isosurface == 0 blue, every residue that intersects isosurface == 1 red, and have a continuous color scheme for all intermediate values from (0 to 1). I already have fitted the PDBs into the cryo-EM maps. Is there any easy way to do this? Cheers, Jonathan Lai University of Illinois at Urbana-Champaign