I use these Good Lock modules to personalize my Galaxy phone's functions and appearance

Do you ever get bored with your Samsung phone's standard customization options and wish you could do something different to reflect your mood or personality? The Good Lock app uses Android's unsurpassed flexibility to personalize every aspect of your user experience with unique colors and effects to suit your tastes. The sheer number of options is overwhelming, so the app is broken into several user-friendly modules to make things easier.

Source : https://www.pocket-lint.com/customizing-your-galaxy-phone-with-good-lock/