bug#70941: 30.0.50; Low RGB color values use the terminal palette in TUI

[Eli Zaretskii]

> From: Gerry Agbobada <gerry@fiberplane.com>
> Date: Sun, 19 May 2024 17:54:16 +0200
> Cc: 70941@debbugs.gnu.org
> 
> > What does the below report on that terminal?
> > 
> >  M-: (tty-color-desc "#000000000000") RET
> 
> ("#000000000000" 0 0 0 0)

That's strange.  I'd expect this instead:

  ("black" 0 0 0 0)

But maybe what you see is expected on a 24-bit TTY, I don't have
access to such a terminal.