/**
 * Show Pixel Color (v1.5)
 * by GoToLoop (2013/Feb)
 *
 * http://forum.processing.org/topic/pixel-colour-recognition-of-mouse-position
 */

void setup() {
  size(800, 600);
  noLoop();
  background(0);

  for (int i = 0; i != 500; i++) {
    fill( (color) random(0x1000000) | #000000 );
    rect( random(width), random(height), 40, 30);
  }
}

void mouseMoved() {
  color c = get(mouseX, mouseY);

  color r = c >> 020 & 0xFF;
  color g = c >> 010 & 0xFF;
  color b = c & 0xFF;

  print( "(" + mouseX + "," + mouseY + ") \t\tColor: #" + hex(c) );
  println( "\tR: " + r + "\t G: " + g + "\t B: " + b );
}

Source of my idea: 20 and 10 as right shift value instead of 16 and 8 ;)

              

               

                20 and 10 as right shift value instead of 16 and 8 ;)
               
              

  color r = c >> 020 & 0xFF;
  color g = c >> 010 & 0xFF;

is analogous to:

  color r = c >> 0x10 & 255;
  color g = c >> 8 & 0377;

for example!