Adam Williamson (awilliam(a)redhat.com) said:
it still has a lot of raw edges. GTK+3 apps, at present, seem to be
very
uglily (is that a word?) themed, for some reason - some all-grey theme
that looks like it came from a 1996 Solaris machine or something - and
there's lots of other sharp edges.
https://bugzilla.redhat.com/show_bug.cgi?id=658605
Bill