as you insert your webcam image using image() you can define the width and height of your image like this :
image(img, x, y, width, height)

to get the colorinformation you can use either http://processing.org/reference/loadPixels_.html

or

http://processing.org/reference/get_.html

OK, this is my result. Its my beginner result of first-contact with programming after 15h. Yeaa!

And now the next problem. How i can send this 32bit color code to an USB card for servo controlling?????
Please help me, ...please!

THX

import processing.video.*;

Capture cam;
Capture cam1;

void setup() {
 size(840, 680);
 cam = new Capture(this, 10, 8, 24);
 
}


void draw() {
   rect(67,84,2,2);
   noFill();
   stroke(255);
 
 if (cam.available() == true) {
   cam.read();
 
   cam.filter(GRAY);
   loadPixels();
//    pixels[69*width+68];
   println("color  " + get(68,85));
   
   image(cam, 50, 50, 200, 160);
 }
 image(cam, 50, 300, 200, 160);
 
}