If you see my message quickly enough (I can't remember how long the green lasts, so not sure when the deadline is for this example), here's the most recent green I saw to give you an example: jonathan7977, https://news.ycombinator.com/item?id=46264260 (linked directly to their comment but it shows green on the main thread also - https://news.ycombinator.com/item?id=46263317)

I see them every day.

A lot of them I only see because I have "showdead" turned on.