On Fri, Jan 01, 2021 at 10:41:15PM +0200, Eli Zaretskii wrote:
> > Date: Fri, 1 Jan 2021 19:43:11 +0100
> > From: <tomas@tuxteam.de>
> > 
> > There is a face `show-paren-match-expression': most probably you want to
> > tweak that one.
> > 
> > How did I find out? Well, I set show-paren-style to 'expression, set
> > point to an opening parenthesis and then did a `describe-face'.
> 
> And I found that out by reading the code of paren.el.

This, of course, is the Royal Road™ :-)

Cheers
 - t