On Fri, 27 Jan 2012 10:29:22 +0000, Mark Walters <markwalters1009@gmail.com> wrote:
> I am not sure if this is the place

Here or #notmuch.

> to ask but is there a corresponding option for colouring the summary
> line in notmuch-show depending on tags/flags?

There's id:"1325006003-27152-1-git-send-email-dme@dme.org", but it's a
bit old and may not apply cleanly any more.