Set Hue light to red for 2 seconds when certain words are mentioned in Slack

huebot.js

var Botkit = require('botkit');
var unirest = require('unirest');

var botToken = 'SLACK_BOT_TOKEN';
var hueBridge = 'IP_OF_HUE_BRIDGE';
var hueUser = 'HUE_USER_ID_FROM_BRIDGE';

var controller = Botkit.slackbot({
  debug: false
});

controller.spawn({
  token: botToken
}).startRTM(function(err) {
  if (err) {
    throw new Error(err);
  }
});


controller.hears(['Jon', 'Jonathan', 'John'], ['ambient'], function(bot, message) {
  // Sets light to Red
  unirest.put('http://' + hueBridge + '/api/' + hueUser + '/lights/1/state').send('{"hue":65280}').end();
  setTimeout(backToGreen, 2000);
});

function backToGreen(){
  // Sets light to Green
  unirest.put('http://' + hueBridge + '/api/' + hueUser + '/lights/1/state').send('{"hue":25500}').end();
}