#include <ezButton.h>

#define RED 7
#define GREEN 8
#define BLUE 9
#define YELLOW 10
#define PURPLE 11
#define CYAN 12

ezButton button(2);

byte count;
unsigned long released;
byte arrayofpins[6] = {RED,GREEN,BLUE,YELLOW,PURPLE,CYAN};

void setup() {
  for (byte x : arrayofpins) pinMode(x, OUTPUT);
  button.setDebounceTime(50);
}

void loop() {
  button.loop();
  if (button.isReleased()) {
    count++;
    released = millis();
  }
  if (millis() - released >= 500 && count) {
    if (count <= 6)
      digitalWrite(arrayofpins[count-1], !digitalRead(arrayofpins[count-1]));
    count = 0;
  }
}