char BT_Data;
int  i;
#define GREEN 9
#define BLUE 11
#define RED 10
void setup() 
  {
    Serial.begin(9600);
    for( i=9 ; i<12 ; i++ )
        pinMode(i,OUTPUT);
  }		

void loop() 
  {
      
    if (Serial.available()) 
    {
      BT_Data = Serial.read();
      if(BT_Data == 'G')
      {
        digitalWrite(GREEN,1);
        digitalWrite(RED,0);
        digitalWrite(BLUE,0);
      }
           if(BT_Data == 'B')
      {
        digitalWrite(GREEN,0);
        digitalWrite(RED,0);
        digitalWrite(BLUE,1);
      }
          if(BT_Data == 'R')
      {
        digitalWrite(GREEN,0);
        digitalWrite(RED,1);
        digitalWrite(BLUE,0);
      }
      
          if(BT_Data == 'c')
      {
        digitalWrite(GREEN,0);
        digitalWrite(RED,0);
        digitalWrite(BLUE,0);
      }
          if(BT_Data == 'W')
      {
        digitalWrite(GREEN,1);
        digitalWrite(RED,1);
        digitalWrite(BLUE,1);
      }
          if(BT_Data == 'P')
      {
        digitalWrite(GREEN,0);
        digitalWrite(RED,1);
        digitalWrite(BLUE,1);
      }
          if(BT_Data == 'S')
      {
        digitalWrite(GREEN,1);
        digitalWrite(RED,0);
        digitalWrite(BLUE,1);
      }
          if(BT_Data == 'Y')
      {
        digitalWrite(GREEN,1);
        digitalWrite(RED,1);
        digitalWrite(BLUE,0);
      }    
    }
  }