Microsoft Edge is getting ... System default theme, Light theme, or Dark theme. This will change the overall appearance of your browser which includes the background, new tabs, pages, dialogs ...

But if you've already set Edge as your default browser, or if you're contemplating ... or the text is white on an orange ...

But the color schemes are ... of the Microsoft Edge browser, access the Customize appearance section under the Settings Page. Now you can switch from System default to Light or Dark mode theme ...