#define GREEN_PIN 4
#define RED_PIN   5
#define BLUE_PIN  6

void setup() {
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(RED_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);

  // Apagar todos los colores al inicio
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(BLUE_PIN, HIGH);
}

void loop() {
  // Verde
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(BLUE_PIN, HIGH);
  delay(2000);

  // Rojo
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(RED_PIN, LOW);
  digitalWrite(BLUE_PIN, HIGH);
  delay(2000);

  // Azul
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(BLUE_PIN, LOW);
  delay(2000);

  // Amarillo (Rojo + Verde)
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(RED_PIN, LOW);
  digitalWrite(BLUE_PIN, HIGH);
  delay(2000);

  // Cian (Verde + Azul)
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(BLUE_PIN, LOW);
  delay(2000);

  // Magenta (Rojo + Azul)
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(RED_PIN, LOW);
  digitalWrite(BLUE_PIN, LOW);
  delay(2000);

  // Blanco (todos los colores)
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(RED_PIN, LOW);
  digitalWrite(BLUE_PIN, LOW);
  delay(2000);

  // Apagado
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(RED_PIN, HIGH);
  digitalWrite(BLUE_PIN, HIGH);
  delay(2000);
}