#define red 12
 #define pink 9
 #define white 7
 #define yellow 2
 #define purple 4
 char x;
void setup() {
 
 Serial.begin(9600); 
 pinMode(red, OUTPUT);
 pinMode(pink, OUTPUT);
 pinMode(white, OUTPUT);
 pinMode(yellow, OUTPUT);
 pinMode(purple, OUTPUT);
 Serial.println("Enter a line : ");
 
}

void loop() {

if(Serial.available()>0)
  {
    x=Serial.read();

    if(x=='r')
      digitalWrite(red, HIGH);
    if(x=='p')
      digitalWrite(pink, HIGH);
    if(x=='w')
      digitalWrite(white, HIGH);
    if(x=='y')
      digitalWrite(yellow, HIGH);
    if(x=='d')
      digitalWrite(purple, HIGH);

      if(x=='o')
      {
      digitalWrite(red, LOW);
      digitalWrite(pink, LOW);
      digitalWrite(white, LOW);
      digitalWrite(yellow, LOW);
      digitalWrite(purple, LOW);
      }

  }


}