#define R_OUT 10
#define G_OUT 9
#define B_OUT 8
#define R_IN 7
#define G_IN 6
#define B_IN 5

bool r, g, b, _r, _g, _b;

void setup() {
  Serial.begin(9600);
  pinMode(R_OUT, OUTPUT);
  pinMode(G_OUT, OUTPUT);
  pinMode(B_OUT, OUTPUT);
  pinMode(R_IN, INPUT);
  pinMode(G_IN, INPUT);
  pinMode(G_IN, INPUT);
  r = false;
  g = false;
  b = false;
  Serial.println("SETUP OVER");
}

void loop() {
  getColor();
  setColor();
  if (_r != r || _g != g || _b != b) {
    Serial.print("RGB : ");
    Serial.print(r ? "1" : "0");
    Serial.print(g ? "1" : "0");
    Serial.print(b ? "1" : "0");
    Serial.println();
    delay(250);
  }
}

void getColor() {
  _r = r;
  _g = g;
  _b = b;
  r = digitalRead(R_IN) == HIGH ? !r : r;
  g = digitalRead(G_IN) == HIGH ? !g : g;
  b = digitalRead(B_IN) == HIGH ? !b : b;
}

void setColor() {
  digitalWrite(R_OUT, r);
  digitalWrite(G_OUT, g);
  digitalWrite(B_OUT, b);
}