I have manipulated the shortcut on my desktop and in the task bar to show the "doge"-faced april fools logo for nightly permanently, but not everyone knows how to change icons, and therefore it would be nice customization feature. On Android I've see...
I would also love to see the idea finally implemented. In the meantime, I'm using Ultima Dark, an open-source addon that is agressively enough and avoids white flickering: https://addons.mozilla.org/en-US/firefox/addon/ultimadark/(I'm not affiliated ...
