Turn on different colored LED's in Arduino

gistfile1.ino

int i;

int redPin = 9;
int greenPin = 11;
int bluePin = 10;

int pins[3] = {redPin, greenPin, bluePin};

void setup()
{
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);  
}

void showPin(int pinName)
{
  digitalWrite(pinName, HIGH);
  delay(500);
  digitalWrite(pinName, LOW);
}

void loop()
{
  for (i; i<3; i++) {
    showPin(pins[i]); 
  }
  i=0;
}