by toggling the #dark-light-mode flag in the chrome://flags
Now you can have dark and light modes
Google said in a blog post, “The ‘light’ theme keeps things bright and airy, while ‘dark’ makes for easy reading at night or in low light, and can help conserve power
#TipsAndTricks
that said some users might already see this feature without enabling the flag
the android applications from play store don't switch to dark themes
the new toggle is rolling out on #ChromeOS 104 which is currently the newest stable version but you might still have to enable the flag for this to work