Hi,
I have a suggestion that GNOME-theme-manager should create
a qt configuration files describing proper colors (the same as the
gnome theme) so that Qt applications (ex. Opera) would be
well-integrated with Ubuntu desktop. Some nice qt engine also should be
installed by default (polymer?). On the default Ubuntu installation Qt
applications look very ugly.
There could be a simple checkbox in the GUI "Qt integration" defying if use that function or not.
KDE users has such feature and gtk applications look good in KDE. What do you think?
Brainstorm idea: http://brainstorm.ubuntu.com/idea/1744/