@codinghorror, It looks like whoever is responsible for the styling of things in Discourse (don’t know if that’s you) has taken a page from the iOS style guide. I for one, really really really hate it.
The new notification icons are so subtle that they’re nearly invisible to me. OK perhaps it’s a resolution thing since I run dual 2500px-wide monitors. But still, I blow up my browser windows pretty large to compensate and still… I barely notice these things. The old ones were nice & “chunky” and stood out, visible instantly at a glance even from across the room.
I don’t know if I’m in the minority or what, but I truly hope this isn’t the direction you’re going overall. I can’t stand iOS7’s style and wish like crazy I had not made the horrible error in updating my iPhone to 7. My iPad mini came with 7 so no choice there, but my trusty iPad 3 is still on 6 and will never update again unless 8 has gone away from this “thin & clean” look that is so awful for so many reasons. The last thing I want is for my desktop web browsing experience to mirror iOS.
Anyway there ya go.