Decorative color light

const int whitePin = 8;
const int redPin = 10;
const int yellowPin = 11;
const int greenPin = 12;

void setup() {
  // put your setup code here, to run once:
pinMode(whitePin, OUTPUT);
pinMode(redPin, OUTPUT);
pinMode(yellowPin, OUTPUT);
pinMode(greenPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(whitePin, HIGH);
delay(50);
digitalWrite(redPin, HIGH);
digitalWrite(whitePin, LOW);
delay(50);
digitalWrite(yellowPin, HIGH);
digitalWrite(redPin, LOW);                                                                                                  
delay(50);
digitalWrite(greenPin, HIGH);
digitalWrite(yellowPin, LOW);
delay(50);
digitalWrite(greenPin, LOW);
delay(50);
digitalWrite(yellowPin, HIGH);
digitalWrite(greenPin, LOW);
delay(50);
digitalWrite(redPin, HIGH);
digitalWrite(yellowPin, LOW);
delay(50);
digitalWrite(bluePin, HIGH);
digitalWrite(redPin, LOW);
delay(50);
digitalWrite(whitePin, HIGH);
digitalWrite(bluePin, LOW);
}