#define RED_BTN    25
#define GREEN_BTN  26
#define BLACK_BTN  27
#define BLUE_BTN   14

#define RED_LED    33
#define CYAN_LED   32
#define BLACK_LED  13
#define BLUE_LED   12

void setup() {
  pinMode(RED_BTN, INPUT_PULLUP);
  pinMode(GREEN_BTN, INPUT_PULLUP);
  pinMode(BLACK_BTN, INPUT_PULLUP);
  pinMode(BLUE_BTN, INPUT_PULLUP);

  pinMode(RED_LED, OUTPUT);
  pinMode(CYAN_LED, OUTPUT);
  pinMode(BLACK_LED, OUTPUT);
  pinMode(BLUE_LED, OUTPUT);
}

void loop() {
  digitalWrite(RED_LED, !digitalRead(RED_BTN));
  digitalWrite(CYAN_LED, !digitalRead(GREEN_BTN));
  digitalWrite(BLACK_LED, !digitalRead(BLACK_BTN));
  digitalWrite(BLUE_LED, !digitalRead(BLUE_BTN));
}