From: Francesco Pietra (
Date: Thu Feb 13 2020 - 11:28:10 CST

With VMD 1.9.4a12 I am trying to obtain images, on a black background, of a
RNA-protein complex displayed in color by chain (new carton). As you can
imagine, there are so many chains. In this system, pathways of a ligand are
illustrated by highlighting RNA residues, as colored wdw, that lie at a few
Angstrom from the traveling ligand.

Using Snapshot or Tachyon, the variety of colors for the new carton
assembly (both RNA and proteins) in poorly reproduced, actually nearly
uniform color, while colors of wdw residues is correctly reproduced. All
that by opening the .tga file with various tools, including GIMP.

Can that be a problem of using the correct tool instead of Snapshot or
Tachyon? Are there any better?

Thanks for advice

francesco pietra