var qs = require("querystring");
var http = require("http");

var options = {
  "method": "POST",
  "hostname": [
    "192",
    "168",
    "0",
    "20"
  ],
  "path": [
    "update"
  ],
  "headers": {
    "Content-Type": "application/x-www-form-urlencoded",
    "cache-control": "no-cache",
    "Postman-Token": "34144980-756e-401b-8f32-088f5ddfa04b"
  }
};

var req = http.request(options, function (res) {
  var chunks = [];

  res.on("data", function (chunk) {
    chunks.push(chunk);
  });

  res.on("end", function () {
    var body = Buffer.concat(chunks);
    console.log(body.toString());
  });
});

req.write(qs.stringify({ mode: 'ON',
  colorOne: 'new one',
  colorTwo: 'new two',
  colorThree: 'new three',
  colorFour: 'new four',
  delayTime: '200',
  undefined: undefined }));
req.end();