const int LED_R=9;
  const int LED_G=6;
  const int LED_B=5;

  void setup() {
    // put your setup code here, to run once:
    pinMode(LED_R, OUTPUT);
    pinMode(LED_G, OUTPUT);
    pinMode(LED_B, 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);
  }

  void setcolor(int red,int green,int blue){
    red=255-red;
    green=255-green;
    blue=255-blue;
    analogWrite(LED_R,red);
    analogWrite(LED_G,green);
    analogWrite(LED_B,blue);
  }