How to Change Themes in Chrome
You can browse for themes and install them directly from the online Chrome Web Store:
How to Remove Themes in Chrome
You can uninstall a theme from Chrome if you no longer wish to use it and want to go back to the default:
Changing Chrome’s Color Scheme
The themes control Chrome’s appearance. You cannot independently modify colors apart from a theme package. The only way to change Google Chrome’s background colors is to change the theme. Some operating systems override Chrome’s behavior, setting specific colors for various user-interface elements. For example, Windows supports an accent color, and different Linux desktop managers customize every element of a typical window.
How to Change Themes in the Chrome Mobile App
The mobile version of Chrome doesn’t have as many options as the desktop version, but you can switch between light and dark themes. Chrome will automatically switch to the dark theme when you turn on Android Dark mode or dark mode for iPhones and iPads.