A free app for Android, by Sudo Mudo.

Call screen themes: Full screen caller ID is a free, easy-to-use, customizing tool for your phone. It allows you to choose from over a dozen beautiful themes and backgrounds, along with font colors and text styles. It’s a great way to personalize your phone’s look!

You can select any of the themes, or you can create your own.

You will be able to customize the theme with different text styles, text sizes, colors, and fonts.

There are seven themes available, and you will be able to select one of them.