Just a couple of modifications and you can make a tank to a color-tracking airsoft turret. It can moreover by using a manually controlled joystick and GUI.

The creator added an airsoft carbine gun to the robotic tank and just played by adding color tracking to its original paint. This device can shoot and target by tracking the objects based on the color. He also added on-board image processing capabilities to the treads for mobility and wireless controller.

The camera act as the range finder in combination with a RGB color processing program. The hardware is built Arduino boards and RC servos for the gun to trigger while wireless communication is done via XBee Pro module.