Re: master 11f10dc0d0b: Update etc/rgb.txt from X.Org upstream

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Stefan Kangas <stefankangas@gmail.com>
> Date: Sun, 15 Oct 2023 09:10:24 +0800
> 
> Striving for perfect consistency in color names between systems is a
> pointless exercise, for X servers are given a blank check to modify
> local colors as they see fit, generally in a crude attempt at color
> calibration for the system's monitor.

I agree.  I think we should revert that commit, and I see no bug in
the fact that Emacs shows slightly different colors in different GUI
environments.