Has been talking about since before launch.
Already during the beta test of Windows 10, one could activate dark theme in parts of the user interface.
Currently, the official support for apps like Outlook email and calendar, Edge and Groove Music, but according to Microsoft enthusiast Paul Thurrott should support be wider in upcoming “Anniversary Update,” which is expected this summer.
Users will have access to “dark theme” via Settings and everything that the user does not have specific, dark. This is a feature Windows Phone has had a longer time and more will probably want this welcome also to the PC version.
Want “dark mode” in Windows 10 now, this can be done via the registry. How to do it:
Get up regedit (Windows + R – type regedit)
Find HKEY_CURRENT_USER -> SOFTWARE -> Microsoft -> Windows -> CurrentVersion -> Themes -> Personalize
Right-click in the right window, create a new “DWORD (32-bit) Value” and rename it “AppsUseLightTheme.”
Double click on AppsUseLightTheme and set the value to 0.
Log out the user, or restarting
Should you wish to return to brighter colors, do step 4 again, but changes to “1” this time.