void setup() {
  // put your setup code here, to run once:
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  // RED
for (int i=1; i<=5; i++)
{
  digitalWrite(8,HIGH);
  delay(500);
  digitalWrite(8,LOW);
  delay(500);
}
// GREEN
for (int i=1; i<=10; i++)
{digitalWrite(9,HIGH);
delay(500);
digitalWrite(9,LOW);
delay(500);
}
//BLUE
for(int i=1; i<=15; i++)
{digitalWrite(10,HIGH);
delay(500);
digitalWrite(10,LOW);
delay(500);
}
}