diff --git a/fedora-live-kde-base.ks b/fedora-live-kde-base.ks
index 14edfd5..12b2c93 100644
--- a/fedora-live-kde-base.ks
+++ b/fedora-live-kde-base.ks
@@ -33,6 +33,17 @@ DESKTOP="KDE"
 DISPLAYMANAGER="KDE"
 EOF
 
+# make oxygen-gtk the default GTK+ theme for root (see #683855, #689070)
+cat > /root/.gtkrc-2.0 << EOF
+include "/usr/share/themes/oxygen-gtk/gtk-2.0/gtkrc"
+include "/etc/gtk-2.0/gtkrc"
+gtk-theme-name="oxygen-gtk"
+EOF
+cat > /root/.config/gtk-3.0/settings.ini << EOF
+[Settings]
+gtk-theme-name = oxygen-gtk
+EOF
+
 # add initscript
 cat >> /etc/rc.d/init.d/livesys << EOF