From: Axel Kohlmeyer (
Date: Tue Sep 30 2014 - 11:08:27 CDT

On Tue, Sep 30, 2014 at 10:54 AM, Paweł Wolski <> wrote:
> Hi,
> I have problem with change atoms colors when it's name have two chars, eg:
> when I use command:
> color Name 1 gray
> - everything is ok, by when I use:
> color Name 10 gray
> I get error: Unable to change color name.
> In this structure I have atom's name 10.
> What I do wrong?


however VMD limits how strings are recognized in the Name field for
most entries to the first character. this has its origin in the custom
that in PDB files atom names indicate their topological position with
the second character (CA is alpha carbon, HA hydrogen at alpha carbon,
CB is beta carbon as so on).


> Best,
> Pawel

Dr. Axel Kohlmeyer
College of Science & Technology, Temple University, Philadelphia PA, USA
International Centre for Theoretical Physics, Trieste. Italy.