Yes, there are circuits. You need to fit a 1206 sized SMD 4-resistor pack and 4x 3mm LEDs, and write some software to send the correct ioctl to the display driver to turn the lights on (you can turn them on/off/dim them). They all turn on/off together, and can run wether or not the display is on.

As rob said, you also need transparent caps.

Basically, it's not a user-fit job. The PCB has the tracking on it, the PICs have the code in them, but the necessary parts are not fitted.

Hugo