The build is from before Windows 11 was unveiled, compiled in May 2021. It includes unused variants of Windows 10's and Windows 11's default wallpaper.

Windows 11 also lets you play around with the UI colors to make the dark mode theme your own (via Microsoft). Find the Accent Color menu below the Choose Your Mode section.

Windows 11 shipped with a “dark mode,” but not a good one. It’s more like a dark theme, missing features you’ve come to expect from other platforms. Dark mode should automatically kick in ...

It wasn’t so long ago that many a PC user was clamoring for a Dark mode on Windows 10. Now that they have it, things are swinging in the opposite direction: Microsoft is bringing a ‘Light Mode ...

Paint's dark mode is one of several Windows features that Microsoft is currently experimenting with, many of which were announced at the company's Build developer conference last month.

Windows 11 is not the best when it comes to managing themes. Still, Microsoft is working on improving it with a new toggle in Action Center, allowing you to turn on or off dark mode quickly.