int red = 9;
int green = 5;
int blue = 3;

void setup() {
pinMode(red, OUTPUT);
pinMode(green, OUTPUT);
pinMode(blue, OUTPUT);
}

void loop() {
analogWrite(red, 255);
analogWrite(green, 255);
analogWrite(blue, 0);
delay(1500);

analogWrite(red, 0);
analogWrite(green, 255);
analogWrite(blue, 255);
delay(1500);

analogWrite(red, 255);
analogWrite(green, 0);
analogWrite(blue, 255);
delay(1500);
}