A.R Drone Project

Question

I wanted to ask abut potential project idea using node.js and opencv. I want to use the node.js code shown below and somehow link it to opencv for object recognition. Like following a straight path for a gutter from one end to the other. Typically gutters are white and I feel like that color is hard to detect and follow. I'm not too sure. I am new to opencv and node.js and was wondering if I get any feedback or some sample code related to my project. Are there other ways to go about this project?

var arDrone = require('ar-drone');
var client  = arDrone.createClient();

client.takeoff();

client
      .after(2000, function() {
        this.up(1);
      })
      .after(5000, function() {
        this.front(1.0);
      })
      .after(2000, function() {
        this.clockwise(0.5);
      })
      .after(5000, function() {
        this.back(0.8);
      })
      .after(2000, function() {
        this.land();
      });