void setup() {
  // put your setup code here, to run once:
 pinMode(5, OUTPUT); 
  pinMode(6, OUTPUT);
  pinMode(3, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 setColor(255, 0, 0); 
  delay(1000);
  setColor(0,  255, 0); 
  delay(1000);
  setColor(0, 0, 255); 
  delay(1000);
  setColor(255, 255, 255); 
  delay(1000);
  setColor(170, 0, 255); 
  delay(1000);
  setColor(127, 127,  127); 
  delay(1000); 
}
 
 void setColor(int redValue, int greenValue,  int blueValue) {
  analogWrite(5, redValue);
  
  analogWrite(6, greenValue);
 
  analogWrite(3, blueValue);
  
}