Call Theme & Color Call Screen is a free Android app developed by Dupli Rect under the Utilities & Tools category. It offers a variety of vibrant caller screen themes with live wallpapers to make your incoming calls more visually appealing. The app also features call flash effects and color phone themes to further customize your call screen.

In addition to its visual features, Call Theme & Color Call Screen offers useful tools such as a traffic finder, STD and ISD codes, and mobile system info and data usage details. You can also set specific call themes and ringtones for individual contacts, and get free recharge plans for your number. The app's latest feature provides number information with location details including state and country.

It's worth noting that Call Theme & Color Call Screen does not present itself as a spying or secret surveillance app and does not contain any malicious software. The app is free to download and use, and offers a battery-friendly and power-saving experience. Overall, this app is a great choice for those looking to add some color and customization to their call screens.