I just installed kubuntu-desktop on a regular ubuntu install on my laptop because I was curious about how the latest version of KDE looks. When I logged back into Unity, though, some of my apps, for example Chromium and LibreOffice, now use qt widgets (along with a blue theme and smaller fonts) instead of the gtk they used to use (with the orange theme and larger Ubuntu fonts). It looks really weird and is distracting to have two different themes going at once. Any ideas how to get it to look like regular Ubuntu and not a mixture of Ubuntu and Kubuntu? I could remove Kubuntu if worse comes to worst, but I'd rather fix some setting to reset the default interface back to gtk.