Making GTK3 apps try to look more native in XFCE on Debian
XFCE is a GTK2 environment, however a lot can be done to improve GTK3 apps on XFCE.
I prefer to use Clearlooks as my GTK2 theme and use the GNOME icon set. On Debian, apt-get install gnome-icon-theme gnome-icon-theme-extras gnome-icon-theme-symbolic clearlooks-phenix-theme
and use the XFCE Appearances to change your theme to Clearlooks-Phenix and your icons to GNOME.
If you’re using an XFCE GTK engine theme instead, install gtk3-engines-xfce
instead of clearlooks-phenix-theme
, and there also is a gtk3-engines-oxygen
which provides a native look-alike of KDE4’s Oxygen theme.
You probably should restart your X session after fiddling around with this to fix apps that don’t change themes at runtime properly.