Write hex value to a characteristic?

Thanks Gordon. I just tried but this does nothing (just displays Done! in the console). If I set the same value using the nrf app, the color is set to red.

I believe the Puck can connect to the device, get the service and characteristic because I don't have any exception but the color is not modified when I write a value to the characteristic.

function setLight() {
  var gatt;
  NRF.connect("AC:E6:4B:06:6F:CD").then(function(g) {
    gatt = g;
    return gatt.getPrimaryService("0000ff02-0000-1000-8000-00805f9b34fb");
  }).then(function(service) {
    return service.getCharacteristic("0000fffc-0000-1000-8000-00805f9b34fb");
  }).then(function(characteristic) {
    characteristic.writeValue([ 0x00, 0xFF, 0x00, 0x00 ]);
  }).then(function() {
    gatt.disconnect();
    console.log("Done!");
  });
}

setLight();