The design changes Android is getting in version 12 are considered the biggest ever, thanks to the new Material You design language that we've seen developed and improved during the developer previews and the first beta release.
Android 12's wallpaper-based theming system is awesome (Material You)
Beta 2 also brings to life the long-awaited auto-theme engine, an engine that changes system colors based on your wallpaper colors, allowing you to personalize your phone even more. Here’s how it works.
This Material You system feature, also known as “Monet,” is automatically enabled in Android 12 beta 2. Whenever you change the wallpaper, the system will pull colors from your background and apply them to various system items.
These are the changes:
