Hacker News Reader

There's no downvote button for me, I had no idea HN had downvotes

FWIW I’ve got one. You need over 1k karma I think (or maybe it is based on some other metric).

A post with more downvotes than upvotes will show up as grey for me too.

The grey part is for everyone. Flagged posts show an even lighter grey, IIRC.