I'm looking to control the styling of lifelines for individual participants in a sequence diagram, so that the lifeline of that participant looks visually distinct from the lifelines of other participants.
I've tried using stereotypes to no avail, and using the beta <style> tag to try to add a style, but that doesn't seem to work either. I can control the global style though.
I have a participant like this:
participant "alpha" as A <<A_style>>
and I'd like the lifeline for this participant specifically to be, say, #red