If you use the Turn Off the Lights browser you will see if you click on the gray lamp button it dims the whole web page. And if there is an embed YouTube or HTML5 video on the web page it highlights that video player. But as an internet user you that it dims not the whole screen, and that the menubar is not dark. It’s screen dimmer for all your personal desktops screens.
A screen dimmer that dims the whole screen black
A browser extension (from Google Chrome, Firefox, Opera, Safari and Internet Explorer) works only inside the web page content. And not in the User Interface of the web browser. But there is a solution if you want to have a dark menubar and toolbar or have the whole screen black.
- You can use the official Turn Off the Lights browser theme that’s designed to have the same opacity black color.
- You can use the Turn Off the Lights for Desktop software for Windows, that’s available for Windows 7, Windows 8, Windows 8.1 and Windows 10.
- You can change your Windows theme packet to a high contrast color.