Your Firefox (Iceweasel) looks really bad under KDE 4? Wicd and Gimp are ugly? Thunderbird (Icedove) borders, buttons and menu are broken?
Tweaking Gnome Apps to change theirs look & feel on KDE is simple. Follow three steps described below and repair almost all GTK applications appearance under new KDE.
Tweaking Gnome applications under KDE 4 on Debian Sid (Solution of this problem with other distro should be similar)
- At first open
konsoleand type there:sudo aptitude install gtk-qt-engine-kde4 kwin-style-qtcurve kde-style-qtcurve gtk2-engines-qtcurve - Configure KDE. Open:
K menu->System settings->Appearance. ChooseGTK styles and fontstab, and select there:
- GTK styles: “Use another style: QtCurve
- GTK fonts: “Use my KDE fonts in GTK applications”
- Click Apply and reboot system. After reboot your Iceweasel should look like on screen attached below.

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Thanks a lot.
I’ve been using it on squeeze right now and it works like a charm!
gtk-qt-engine-kde4 is now gtk-qt-engine