#define GRN_RGB_PIN 26
#define RED_RGB_PIN 27
#define BLU_RGB_PIN 28
// half a second

int count = 0;

// if not defined then code is ignored
void setup() {
  // put your setup code here, to run once:
  pinMode(GRN_RGB_PIN, OUTPUT);
  pinMode(RED_RGB_PIN, OUTPUT);
  pinMode(BLU_RGB_PIN, OUTPUT);
  Serial.begin(9600);
}

void loop() {

  digitalWrite(BLU_RGB_PIN, HIGH);
  digitalWrite(RED_RGB_PIN, HIGH);
  digitalWrite(GRN_RGB_PIN, LOW);
}