gtk-update-icon-cache /usr/share/icons/elementary-xfce
gtk-update-icon-cache ~/.icons/elementary-xfce-dark
gtk-update-icon-cache /usr/share/icons/elementary-xfce-dark
gtk-update-icon-cache ~/.icons/elementary-xfce-dark
gtk-update-icon-cache /usr/share/icons/elementary-xfce-darker
gtk-update-icon-cache ~/.icons/elementary-xfce-dark