Note that the title bar, toolbars, and menus for Edge turn dark, but web pages themselves remain unaffected. In the “Choose A Theme” drop-down menu, choose the “Dark” option.

To activate the dark theme in Edge, click the menu button on the toolbar (the icon with three dots at the far right side), and then select the “Settings” option. However, its dark theme option is entirely separate from the Dark Mode option in Settings for some reason. The Microsoft Edge web browser included with Windows 10 also has a dark theme. A few desktop applications, including File Explorer and Paint.NET, do respect this setting-but most don’t. And, as we mentioned before, this option doesn’t affect most desktop applications. However, it’s up to each developer to support Dark Mode, and many do not. The Settings application itself immediately turns dark, as will many other “Universal Windows Platform” applications (those you get from the Windows Store). Scroll down and select the “Dark” option under the “Choose your app mode” section. To enable Dark Mode, head to Settings > Personalization > Colors. Enable Dark Mode for Windows 10 Settings and Apps

Dark and light settings