DARK10 - Enable Windows 10 HIDDEN DARK THEME

Enable a System-wide Dark Theme
Windows 10’s new default theme is very bright, with lots of white — from window backgrounds to white title bars. Microsoft built a dark, black theme into Windows 10, but it’s hidden.

Microsoft has said it will continue working on Windows 10, so it’s possible this feature will be improved and there will be an easy toggle for it in the Settings app in the future. For now, here’s how you have to activate the dark theme.

Update: We’ve been told the registry change only works on the Professional, Enterprise, and Education editions of Windows 10. it won’t work on the Home edition for some reason. We’re looking into it.