bug#21557: 25.0.50; HTML renders text invisible

[Eli Zaretskii]

> Date: Mon, 28 Sep 2015 17:04:31 +0900
> From: Katsumi Yamaoka <yamaoka@jpl.org>
> Cc: rms@gnu.org, 21557@debbugs.gnu.org
> 
> On Mon, 28 Sep 2015 10:31:49 +0300, Eli Zaretskii wrote:
> > Does shr-color-visible-luminance-min have any effect on a TTY?  I
> > think Richard is using text-mode frames that support only 8 colors.
> 
> Ooops.  I verified it doesn't help on a TTY.
> So, how about using lynx instead of shr?

I think an Emacs-only solution would be preferable.  Can
shr-color-visible-luminance-min be adapted to a small number of
colors?  The simplest would perhaps be just overriding the foreground
color with something that is legible on the background color.