You might want to lighten up the blue link text, it's a bit dark. Also, as I'm sure you're aware, the box around the reply box is a bit too light, compared to the rest.
Other than that, I think it may become my new default. <3
Or maybe darken the link text. I don't know. Whatever looks better. Just the thin, I've-already-seen-this-post links look sort of hard to see.
Darker would be better, I think; lighter is probably worse.