I suppose I should explain this a little.
Ideally, sure...
You can install KDE and start setting up Compiz which will limit your system operations in KDE and cause multiple crashes a session, and that is wunderbar.
But what you need to do is learn how to use KDE. Not learn how to use Compiz.
There is no reason to switch to compiz, to do cube
viewtopic.php?f=125&t=9024use kwin.
To change your Window Decoration go to
Systemsettings-->Workspace Apperance-->Window Decorations
If this is prior to 4.11 release and may change soon you can also add Dekorator
viewtopic.php?f=125&t=9273which already contains an extremely large portion of the emerald themes in any case..
To get really funky with it install qtcurve...
The thing is, everyone gets on KDE trying to emulate Gnome and it ends in failure. Then they exclaim how much KDE sucks. Well it does suck, it sucks at being Gnome.