//const int red = 13， ora = 12, yel = 11, gre = 10, blu = 9, indigo = 8, violit = 7;
int outPins[] = {7,8,9,10,11,12,13};
int numPins = sizeof(outPins)/sizeof(outPins[0]);

void setup() {
  // put your setup code here, to run once:
  for(int i = 0; i < numPins; i++)
  {
    pinMode(outPins[i], OUTPUT);
    digitalWrite(outPins[i], HIGH); //inital state is off
  }
  delay(10);

}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i = 0; i < numPins; i++)
  {
    delay(20);
    digitalWrite(outPins[i], LOW);
    delay(200);
    digitalWrite(outPins[i], HIGH);
  }

}