Highlighting in themes on non-tag or link based parameters

Something I couldn’t find documentation or examples of, was the ability to arbitrarily highlight/colour items in a taskpaper file, using Less where it was not an item or link or such.

In particular, the use case specifically, is that I often use +Name of someone in a file to show that I’ve delegated something to that person, an @due and an @week based on when I need to check on them again. I wanted to have some sort of highlighting on the +SShekey to help me note there is a delegated item there as well as having it searchable on clicking (mostly so I have a nice list of everything for that person when following up with my reports etc.).

Is there a way of doing that under the current support the less theming has in Taskpaper (the use case is similar to links, obviously.).

thanks,
Daryl

Out of interest, why not just use @PersonName or @delegate(PersonName) tags for this? Genuinely curious— I also track delegated tasks in my TP/FT file…