ubuntu.css file is found in
/usr/share/gnome-shell/theme/ubuntu.css. I would like to customise this file. Thereafter, should I replace the original with this customised file (I see this practise on-line) or should I store the customised file to
~/.local/share/gnome-shell/theme/ubuntu.css. I am thinking that it should take priority over
/usr/share/gnome-shell/theme/ubuntu.css. Also, I can avoid interfering with sudo permission level files. Is this thought process correct?