The Windows dark theme is one of the newer features of the Windows 10 operating system. It comes in a time when most of us were bored of the ordinary look (read ancient). Initially, the darker theme could be enabled only through the registry, but now it can be achieved with just a few clicks. Head over to the Settings > Personalisation > Colours, scroll down and choose Dark as the app mode. The dark mode would appear mostly in the settings window, though. But explore the other features of this mode and you might end up with a very different looking desktop.