The default green color of WhatsApp looks monotonous especially when we use the app so often. Ofcourse, you can change the chat background using their Wallpaper option. But, that changes only the chat background and not color of the whole app. Also, You may have heard of different modded apps that claim to change color of the app, But again, some of them either stop working after an update or they are not safe to use. So whats the best option to change the colour of WhatsApp? Well the method works when you have rooted your Android phone and installed