Microsoft finally released a replacement for the aged Internet Explorer. It is awesome, apart from being fast and full of future-proof features it also offers customizations (limited for now but will be extended in future updates). In addition to the dark theme in Windows 10, you can make Edge go dark to suit your needs. Launch Edge and then click on the three dots on the toolbar to reveal the overflow menu. Click on Settings. Under choose a theme select Dark and the Dark mode is now enabled.