Might highlighting of OPs depend on one's browser as well as one's device?
They are highlighted on both my laptop and my phone and my own posts on whatever thread are highlighted too. Green for OPs; GN muddy pink for me.
Waitrose has stopped providing bags for loose veg.
It's a bitter pill to swallow, I know.
. I post using a Samsung phone so I assume it is dependent on what you use to post.