#include <LiquidCrystal.h>

LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

int redPin = 9;
int greenPin = 10;
int bluePin = 11;

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);

  // Start LCD
  lcd.begin(16, 2);
  lcd.clear();
}

void countdown(int totalSeconds, const char* message) {
  for (int i = totalSeconds; i >= 0; i--) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print(message);

    delay(1000);
  }
}

void loop() {
  // Red
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);
  countdown(5, "RED"); 

  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH );
  digitalWrite(bluePin, LOW);
  countdown(5, "GREEN");

  // Green
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);
  countdown(5, "BLUE");

 //
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, LOW);
  countdown(5, "YELLOW");

  // Blue
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);
  countdown(5, "MAGENTA");

 // yellow
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);
  countdown(5, "CYAN");

  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);
  countdown(5, "WHITE");

  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);
}