A free app for Android, by Fair Wizard.

Cool Color Phone Lite is an amazing application for those of you who want to have a unique and beautiful caller screen on your Android device. With this app, you can create custom themes for your incoming calls. It allows you to change the background color, as well as the phone flash themes and even the LED notification light. Cool Color Phone Lite is a very easy-to-use app. You just need to click on the options that you want to change. It is easy to use and has a user-friendly interface. You can change the themes for your calls and incoming messages.