int myTimer;
volatile bool collor = 0;
int led = 1;
int pin = 5;
void setup() {
  pinMode(9, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(2, INPUT_PULLUP);
  attachInterrupt(0, buttonTick, RISING);
  myTimer = millis();
}
//***********************************************
void loop() {
  MILLIS_led(pin);
  if (collor == 1) {
    pin = 9;
    digitalWrite(5,0);
  } else {
    digitalWrite(9,0);
    pin = 5;

  }

}

//***********************************************
void MILLIS_led(int pin1) {
  if (millis() - myTimer >= 500) {
    digitalWrite(pin1, led);
    led = 1 - led;
    myTimer = millis();  // скидання таймера
    millis();
  }
}
//***********************************************
void buttonTick() {
  collor = 1 - collor;
}