It looks a bit better than previously (it was darker previously IIRC), I'd say it looks OK. But it is easily recognizable as a non-native toolkit in a desktop, whereas all other major toolkits (GTK+, Qt, and wxWidgets if you like) are not (as they render using either GTK+ or Qt). What it needs are stuff like rounded corners and some more visual hints, like coloring of active tabs.
I want my graphical applications to look great, not OK. They a sort of a distraction from the main part of the screen content, the terminal. That's why I don't use stuff like Tk, Xfce, or Enlightenment. They're all ugly and inconsistent compared to the wonderful GNOME 3 desktop (GNOME 3 has other important problems though, like crashes on user switch).