int pinR = 13;
int pinG = 14;
int pinB = 27;
int Red = 26;
int Green = 25;
int Blue = 33;
int Yellow = 32;

void setup() {
  pinMode(pinR, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(Red, INPUT_PULLUP);
  pinMode(Green, INPUT_PULLUP);
  pinMode(Blue, INPUT_PULLUP);
  pinMode(Yellow, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(Red) == LOW) {
    gerarCor(255, 0, 0);
    delay(1000);
  } else if (digitalRead(Green) == LOW) {
    gerarCor(0,255,0);
  } else if (digitalRead(Blue) == LOW) {
    gerarCor(0,0,255);
  } else if (digitalRead(Yellow) == LOW) {
    gerarCor(255,255,0);
  }
}


void gerarCor(int R, int G, int B ) {
  analogWrite(pinR, R);
  analogWrite(pinG, G);
  analogWrite(pinB, B);
}