The magic won't happen for Google Chrome, though, no matter how much you'd like to darken its retina-piercing white background at night. Every website is different and a universal approach to the browser background could wreak havoc on your viewing experience. Or so went the official explanation for the lack of dark mode on mobile Chrome.
The tide is turning, however, and with the spring betas of Chromium, Google snuck a way to unleash the darkness, as long as you are running a version 74 or higher of Chrome for Android. Unfortunately, since forcing dark theme on websites is a hit-or-miss affair, as you will attest for yourself, Google hasn't provided an easy toggle in the browser's settings, so you'd have to hack your way through a bit.
1. Go ahead and type or paste chrome://flags into the Chrome address bar to go into the experimental browser features page;
2. A search for "dark mode" from the top bar will return two entries at the top - "Android Chrome UI dark mode" and "Android web contents dark mode";
3. Switch both options from "default" to "enabled" with the drop-down menu under each description;
4. You'll be prompted to relaunch the Chrome browser, and it will redraw the interface and any open pages into a dark theme with dark background for your viewing pleasure.
May the dark force be with you!