HC-05 Master & Slave Communication

const int BR = 2; //BR = Button for Red
const int BG = 3; //BG = Button for Green
const int BB = 4; //BB = Button for Blue
byte BRstate = 0;
byte BGstate = 0;
byte BBstate = 0;

void setup() {
  Serial.begin(38400);
  pinMode(BR, INPUT);
  pinMode(BG, INPUT);
  pinMode(BB, INPUT);
}

void loop() {

  BRstate = digitalRead(BR);
  BGstate = digitalRead(BG);
  BBstate = digitalRead(BB);

  if (BRstate == HIGH) {
    Serial.println("Red");
    Serial.write ('R');
  } else {
    Serial.write(0);
  }

  if (BGstate == HIGH) {
    Serial.println("Green");
    Serial.write ('G');
  } else {
    Serial.write(0);
  }

  if (BBstate == HIGH) {
    Serial.println("Blue");
    Serial.write ('B');
  } else {
    Serial.write(0);
  }
}

const int R = 5; //R = Red LED
const int G = 6; //G = Green LED
const int B = 7; //B = Blue LED
byte BRstate = 0;
byte BGstate = 0;
byte BBstate = 0;

void setup() {
  Serial.begin(38400);
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
  digitalWrite (R, HIGH);
  digitalWrite (G, HIGH);
  digitalWrite (B, HIGH);
}

void loop() {

  if (Serial.available() > 0) {
    BRstate = Serial.read();
  }
  if (BRstate == 'R') {
    Serial.println("Red");
    digitalWrite (R, LOW); //Set to LOW to turn ON.
  }  else if (BRstate == 0) {
    digitalWrite (R, HIGH);
  }
  if (Serial.available() > 0) {
    BGstate = Serial.read();
  }
  if (BGstate == 'G') {
    Serial.println("Green");
    digitalWrite (G, LOW);
  } else if (BGstate == 0) {
    digitalWrite (G, HIGH);
  }
  if (Serial.available() > 0) {
    BBstate = Serial.read();
  }
  if (BBstate == 'B') {
    Serial.println("Blue");
    digitalWrite (B, LOW);
  } else if (BBstate == 0) {
    digitalWrite (B, HIGH);
  }
}