Processing code to use with arduino to control RGB LED

RGB_Keyboard.pde

//Developed by Rajarshi Roy
import java.awt.Robot; //java library that lets us take screenshots
import java.awt.AWTException;
import java.awt.event.InputEvent;
import java.awt.image.BufferedImage;
import java.awt.Rectangle;
import java.awt.Dimension;
import processing.serial.*; //library for serial communication


Serial port; //creates object "port" of serial class
Robot robby; //creates object "robby" of robot class

void setup()
{
port = new Serial(this, Serial.list()[0],9600); //set baud rate, if it doesnt work change Serial.list[0] to the number of your com port
size(200, 200); //window size (doesn't matter)
try //standard Robot class error check
{
robby = new Robot();
}
catch (AWTException e)
{
println("Robot class not supported by your system!");
exit();
}
}

void draw()
{
int pixel; //ARGB variable with 32 int bytes where
//sets of 8 bytes are: Alpha, Red, Green, Blue
float r=0;
float g=0;
float b=0;
int w=1920;
int h=1080;

//get screenshot into object "screenshot" of class BufferedImage
BufferedImage screenshot = robby.createScreenCapture(new Rectangle(new Dimension(w,h)));
//1368*928 is the screen resolution


int i=0;
int j=0;
//1368*928
//I skip every alternate pixel making my program 4 times faster
for(i=40;i<(w-40); i=i+4){
  for(j=40;j<(h-40);j=j+4){
    pixel = screenshot.getRGB(i,j); //the ARGB integer has the colors of pixel (i,j)
    r = r+(int)(255&(pixel>>16)); //add up reds
    g = g+(int)(255&(pixel>>8)); //add up greens
    b = b+(int)(255&(pixel)); //add up blues
  }
}
r=r/(((w-180)/4)*((h-180)/4)); //average red (remember that I skipped ever alternate pixel)
g=g/(((w-180)/4)*((h-180)/4)); //average green
b=b/(((w-180)/4)*((h-180)/4)); //average blue

if(r<=15)
  r=0;
if(g<=15)
  g=0;
if(b<=15)
  b=0;
if(r>=255)
  r=255;
if(g>=255)
  g=255;
if(b>=255)
  b=255;
 port.write("cL");
 port.write(int(r));

 port.write(int(g)); 


 port.write(int(b));
  println(int(r),int(g),int(b));
delay(10); //delay for safety

background(r,g,b); //make window background average color
}