Chrome OS may eventually be having a dark mode, but so far it's only been seen on its experimental Canary channel, Android Central posted.
Before you go tinkering with Canary, just be advised: Canary is Google's "bleeding edge" Chrome OS route, which gets regular updates of features before they've been thoroughly reviewed. It can only be reached from Chromebooks that are moved to a specific developer mode (not to be confused with the Chrome OS Developer channel). Google warns the Canary may be "unstable."
But right now, to allow dark mode on your Chromebook, you need to get the Canary channel enabled. If you've done so, Android Central says you're just opening Chrome and accessing chrome:/flags/#enable-force-dark and chrome:/flags/#enable-webui-dark-mode in the URL bar. I should mention that I tried this on my older Chromebook and couldn't get it to work. But here's the view caught by the Android Police:
Android Central claims dark mode has some glitches, but states that it appears to extend across the UI, not only to darker backgrounds.
Over the past few months, Google has carried out dark mode models for its Gmail , Google Calendar, Google Fit, and smartphone applications. Both iOS and Android both started promoting the system-level dark mode last year.
We've reached out to Google to see if there are plans to carry out the dark mode in Chrome OS to all devices, and will update if we hear it back.
