Changing GTK+ theme

[Kevin Ross <kevin@familyross.net>]

I just updated my Wheezy laptop, and now all of the widgets are the 
ugly, square blocky ones, as well as the toolbars in various programs.  
When I change the GTK+ theme in gnome-tweak-tool, nothing happens.  I've 
seen this happen before if gnome-settings-daemon wasn't running, but it 
is running.  Rebooting does not help.

Thanks!
-- Kevin