Subject: bug#50141: Current part of emacs red, other parts blue

From: Eli Zaretskii <[email-masked]>
Date: Sat, 21 Aug 2021 16:36:52 +0300

> From: Lars Ingebrigtsen <[email-masked]>
> Cc: [email-masked],  [email-masked]
> Date: Sat, 21 Aug 2021 15:28:25 +0200
> 
> > Basically, faces were never designed to be window-specific.  Even
> > making them buffer-specific (via face-remapping-alist) is somewhat
> > tricky.
> 
> Yeah, I suspect we can't use faces here, but might have to add some new
> window-specific background colour setting?

What could that color setting be, except some face attribute?