10-27-2021 09:22 PM - edited 10-27-2021 09:24 PM
I know it's been a while on this thread; however, in the meantime, there's another option if using Chrome as your browser. Install the extension "Dark Reader", and enable the extension for your Palo Alto GUI URL. Works pretty well, and should suffice until PaloAlto brings a true Dark Mode to their Web UI. 😉