const int rgb_r = 11;
const int rgb_g = 10;
const int rgb_b = 9;

void setup() {
  // put your setup code here, to run once:
  pinMode(rgb_r, OUTPUT);
  pinMode(rgb_g, OUTPUT);
  pinMode(rgb_b, OUTPUT);
}

void setRGBColor(int r, int g, int b){
  analogWrite(rgb_r, r);
  analogWrite(rgb_g, g);
  analogWrite(rgb_b, b);
}

void loop() {
  // put your main code here, to run repeatedly:
  setRGBColor(85,0,169);
  delay(1000);
  setRGBColor(10,100,200);
  delay(1000);

  /*
  R 0 - 255
  G 0 - 255
  B , - 255
  */
}