const byte kirmizi=9, yesil=10, mavi=11;

void setup() {
}

void loop() {
  for (int a = 0; a<= 255; a++) {
    analogWrite(kirmizi, a);
    for (int b = 0; b <= 255; b++) {
     analogWrite(yesil,b);
     for (int c = 0; c <= 255; c++) {
      analogWrite(mavi, c);

      } 
    }
  }
}