Tracker Blocked Highlighter

tracker.highlighter.user.js

// ==UserScript==
// @name         Tracker Blocked Highlighter
// @namespace    http://tampermonkey.net/
// @version      0.1
// @author       jmcmahon
// @match        https://www.pivotaltracker.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    $(function() {
        var colorize = function() {
            $('div.story:has(a.label:contains("blocked"))').children('header').css('background-color', 'red');
        };

        setTimeout(function() {
            colorize();
            setInterval(colorize, 20000);
        }, 4000);
    });
})();