Service to adapt KDE apps appearance to GNOME ones

[Sandro Mani]

Hello,
I want to give the idea I described at 
https://bugs.launchpad.net/ubuntu/+source/kdebase-workspace/+bug/554193 
a try.
I can get most of the information I need easily from 
gtk.settings_get_default(), but I wondered if anyone knew what was the 
best way to detect style changes (i.e. when the user changes something 
in the appearance dialog). Since such events do not seem to get sent via 
dbus, is there any other common way to grab them? I know that each GTK 
application receives the "style_set" event on style changes, but is this 
the most elegant solution than having a gtk application only to be able 
to grab this events? And concerning bookmarks, any better solution than 
watching ~/.gtk-bookmarks for changes?

Thanks!

Cheers, Sandro