Highlight process-marked files in Gnus summary?

[Michael Heerdegen]

Hi,

seems there is no built-in way to highlight (complete lines) of
process-marked files in the Gnus summary, since # is not a normal mark
and can't be specified in `gnus-summary-highlight'?  Is there some other
way (in Gnus)?

The obvious goal is to get a better overview of what is marked before I
e.g. delete the articles.  It's too easy to make a mistake with only
those little # marks around.  Ideally the used face would specify a
background color (like hl-line) so it doesn't interfere with the stuff
in `gnus-summary-highlight'.

Thanks in advance,

Michael.