A free program for Android, by HighSup Dev.
To spice up your incoming and outgoing calls, the Magic Call Theme & Color Screen is here for you! You can now customize your call screen with several lovely and vibrant caller screen themes. In addition, this app has fun call flash effects that increase the appearance of your incoming calls. This also features a traffic finder, wherein you may check traffic and neighboring locations with only one click.
This app lets you select a dialer theme for each of the contacts so you can identify who is calling you. Even your Call Screen can be customized with a wide variety of wallpapers and color flash themes.