This article explains how to change the color of your apps on a Samsung Galaxy device running Android 12 and version 4 of Samsung's One UI and above. This will apply new color palettes to your device, allowing you to personalize the look and feel.
How to change icon color in Samsung
On Android 12 devices, including Samsung Galaxy smartphones running One UI 4, you can change the colors of app icons using the new Color Palette feature. It applies the same theme to all icons at once and, by default, attempts to match the current wallpaper you’ve selected.
You can change the color of all app icons at once with the new Android 12 Color Palette feature. Here's how:
Tap and hold an empty area on your Home screen, then tap Wallpaper and style.