Emoji Keyboard Flat Black Blue is a personalization theme designed for Emoji Keyboard (Cute or Premium or KK version) application. The theme is developed by Themes for Launcher Keyboard SMS Dialer and is available for free on the Android platform. This theme is designed with a black and blue color scheme, black background, and border-less buttons which give it a sleek and modern look.

To use this theme, you need to have Emoji Keyboard (Cute or Premium or KK version) already installed on your device. This theme cannot be used as a standalone application. Once you have installed the Emoji Keyboard application, you can easily apply this theme by opening the application and following the instructions on the screen.

Overall, Emoji Keyboard Flat Black Blue is a great theme for those who want to customize their Emoji Keyboard application with a modern and sleek design. The theme is easy to install and use and provides a unique look to your keyboard.