#define RED 13 
#define GREEN 11 
#define BLUE 10
#define RGB 2

void setup() {
  // put your setup code here, to run once:

 pinMode(RED, OUTPUT);
 pinMode(GREEN, OUTPUT);
 pinMode(BLUE, OUTPUT);
 pinMode(RGB , OUTPUT);
 digitalWrite(RGB, HIGH);

}

void loop() {
  // put your main code here, to run repeatedly:
 digitalWrite(RED, LOW);
 digitalWrite(GREEN, LOW);
 digitalWrite(BLUE, HIGH);
 delay(1000);
 
 digitalWrite(RED, HIGH);
 digitalWrite(GREEN, HIGH);
 digitalWrite(BLUE, HIGH);
 delay(1000);
}