Windows 11/10 comes pre-loaded with a bunch of default themes. You can choose a theme and even change the color, background images and sounds associated with the underlying theme. Switching ...
When creating or modifying themes using Windows 11/10 Personalization feature, you must have changed the wallpaper, sound, and other things. Once adjusted, they can be saved under a different name.
Make sure you have Node v20 or later. Clone the repo and run npm ci to install dependencies. Inside each theme source directory, there is a per-component directory containing the respective styles.