[Arduino]Full Color LED RGB module

int redpin = 11;
int bluepin = 10;
int greenpin = 9;

int val;

void setup() {
  pinMode(redpin, OUTPUT);
  pinMode(bluepin, OUTPUT);
  pinMode(greenpin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  for(val=255;val>0;val--){
    analogWrite(11,val);
    analogWrite(10,255-val);
    analogWrite(9,128-val);
    delay(1);
  }
  for(val=0; val<255; val++){
    analogWrite(11,val);
    analogWrite(10,255-val);
    analogWrite(9,128-val);
    delay(1);
  }
  Serial.println(val,DEC);
  
}
sdr