Comment 10 for bug 1769774

Should this be added to xubuntu-default-settings.gsettings-override to match the Xfce font settings?

[org.gnome.desktop.interface]
gtk-theme='Greybird'
icon-theme='elementary-xfce-darker'
font-name='Noto Sans 9'
monospace-font-name='Monospace 10'