https://flipboard.helpshift.com/hc/en/1-flipboard/faq/138-switch-to-dark-mode/
Switch to dark mode — Flipboard Help Center
By default, Flipboard for Android uses a light theme. You can change it to dark mode independent of your phone’s settings or tell Flipboard
switch to dark modeflipboardhelpcenter
https://forums.virtualbox.org/viewtopic.php?p=558098&sid=a:ce00ad08088f8b1a29c73cadc9e11574
How do I switch to dark mode on Linux? - virtualbox.org
switch to dark modehow do