Please can this be possible in Android and in any mobile browser? Thanks!! This is my solution for Windows Firefox 67.0.4 without installing anything! Thanks Mozilla for making this!! Under Hamburger Menu (on the top right)>options>scroll down to Language and Appearance>colors Choose your background color, font color, hyperlink colors Select from the drop down menu: Override the colors specified by the page with your selections above ALWAYS and voila! dark mode and privacy in one! Works practically everywhere! :D All images look good. (one site had their dropdown menu bkg hardcoded as white) TIPS: I chose a softer black to reduce glare. I found I had to dial down the intensity of my hyperlink colors as well. Again this is only for desktop browsing. I'm looking for something similar in Android. I'm playing around with about:config but nothing yet