Dark Mode for Chrome, Firefox, Edge, and Opera is an extension/add-on that allows quick and easy switches between light and dark modes.
Dark Mode features a simple toolbar toggle button for switching it on and off. It also includes a white-list option that will permit you to exclude specific domains from dark mode. All that you need to do is add a domain(s) (comma separated) from the options page, and the selected websites are excluded from night mode. For ease-of-access, you additionally have the option to utilize the right-click context-menu to exclude desired websites as well.
Similar: How to Enable Dark Mode in Windows 10 How to Enable Dark Mode for All Sites in Microsoft Edge Enable Night Light Mode in Windows 10 to Reduce Eye Strain How to Turn the Windows 10 Desktop Background Image On or Off