ActionScript 2.0 :: Webcam Color Scan Detection And Play Connected Sound

I'm working on a school project that will work so that a webcam can scan a grid of colors and determine what color it is and there by playing a sound that is connected to that color. You can then create music by drawing different colors on a grid.

So I managed to import the webcam image to flash, and that's all. How do I Proceed?
* How do I get the webcam to detect colors? (Green, Blue, Red, Yellow and Black)
* How do I connect these color detections to start playing a sound/movieclip?

This is the code id used to import the webcam.
Code:
import flash.media.Camera;
import flash.media.Video;
var camera:Camera = Camera.getCamera();
if (camera != null) {
video.attachCamera(camera);
} else {
trace("You need a camera.");
}