uint8_t dataHeader = 0xff;
uint8_t numberOfData;
uint8_t rgb[6];
uint8_t lRedPin = 9, lGreenPin = 10, lBluePin = 11, rRedPin = 3, rGreenPin = 5, rBluePin = 6;

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(lRedPin, OUTPUT);
  pinMode(lGreenPin, OUTPUT);
  pinMode(lBluePin, OUTPUT);
  pinMode(rRedPin, OUTPUT);
  pinMode(rGreenPin, OUTPUT);
  pinMode(rBluePin, OUTPUT);
  Serial.begin(57600);
}

// the loop function runs over and over again forever
void loop(){
    if (Serial.available() > 1) {

        uint8_t recievedByte = Serial.read();

        if (recievedByte  == dataHeader) // read first byte and check if it is the beginning of the stream
        {

            for (uint8_t i = 0 ; i < 6 ; i++)
            {
                delay(10);
                rgb[i] = Serial.read();
            }
        }
    }
     //finally control led brightness through pulse-width modulation
    analogWrite (lRedPin, rgb[0]);
    analogWrite (lGreenPin, rgb[1]);
    analogWrite (lBluePin, rgb[2]);
    analogWrite (rRedPin, rgb[3]);
    analogWrite (rGreenPin, rgb[4]);
    analogWrite (rBluePin, rgb[5]);
    }