void setup() {
pinMode(13, OUTPUT); //red
pinMode(11, OUTPUT); //green
pinMode(10, OUTPUT); //blue
}

void loop() {
  digitalWrite(13, LOW); // red on
  digitalWrite(11, HIGH); // green off //red
  digitalWrite(10, HIGH); // blue off
  delay(500);

  digitalWrite(13, HIGH); // red off
  digitalWrite(11, LOW); // green on  //green
  digitalWrite(10, HIGH); // blue off
  delay(500);

  digitalWrite(13, HIGH); // red off
  digitalWrite(11, HIGH); // green off //blue
  digitalWrite(10, LOW); // blue on
  delay(500);

  digitalWrite(13, LOW); // red on
  digitalWrite(11, LOW); // green on  //yellow
  digitalWrite(10, HIGH); // blue off
  delay(500);

  digitalWrite(13, LOW); // red on
  digitalWrite(11, HIGH); // green off //purple
  digitalWrite(10, LOW); // blue on
  delay(500);

  digitalWrite(13, HIGH); // red off
  digitalWrite(11, LOW); // green on //cayan
  digitalWrite(10, LOW); // blue on
  delay(500);

  digitalWrite(13, LOW); // red on
  digitalWrite(11, LOW); // green on  //white
  digitalWrite(10, LOW); // blue on
  delay(500);

  digitalWrite(13, HIGH); // red off
  digitalWrite(11, HIGH); // green off //black
  digitalWrite(10, HIGH); // blue off
  delay(500);
  }