#define pushButton 2
#define blueLed 4
#define greenLed 7
#define yellowLed 10
#define redLed 13

int mode = 0;

void setup(){
  pinMode(pushButton, INPUT);
  pinMode(blueLed, OUTPUT);
  pinMode(greenLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(redLed, OUTPUT);
}

void loop(){
  if(digitalRead(pushButton) == HIGH){
    mode++;
    if (mode > 4) mode = 1;
    delay(400);
  }
 digitalWrite(blueLed, LOW);
 digitalWrite(greenLed, LOW);
 digitalWrite(yellowLed, LOW);
 digitalWrite(redLed, LOW);


if (mode == 1){
  digitalWrite (blueLed, HIGH);}
  else if (mode == 2){
    digitalWrite(greenLed, HIGH);}
    else if (mode == 3){
      digitalWrite(yellowLed, HIGH);}
      else if (mode == 4){
        digitalWrite(redLed, HIGH);}

}