tasklist styling: documentation shows gtkrc-2.0 example

Hello, the documentation at https://docs.xfce.org/xfce/xfce4-panel/tasklist#style_properties shows example styling with the old .gtkrc-2.0 file, which does not work in GTK3 Xfce. Can you please update it with the current ~/.config/gtk-3.0/gtk.css, e.g. by pointing to / using examples from this forum thread? https://forum.xfce.org/viewtopic.php?id=13208