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I have installed plasma-desktop on my girlfriend's Ubuntu 12.04 box, so now she can log on to a KDE desktop, which she likes.

However, GTK applications are not themed.

Here's a screenshot she took of the problem, left is how GTK apps look, right is how it'd be desired:

not themed vs themed

What can fix it?

What I've tried:

I tried installing kcm-gtk, and installed a host of other packages (qtcurve qtcurve-i18n kwin-style-qtcurve kde-style-qtcurve gtk2-engines-qtcurve gtk2-engines-oxygen gtk3-engines-oxygen oxygen-molecule), so now I have a "GTK+ Appearance" item in Application Appearance under System Settings, but as much as I change its theme to Oxygen Molecule or QtCurve, it does nothing (apps look just the same).

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If memory serves, in the system center you can select something like application appearance or window appearance and there is a section on GTK apps that might be of help. Hope this helps!

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