kukukube_bot.js

(function (w, $) {
  $(".btn.play-btn").click();

  w.setInterval(run, 500);

  function clickSpan() {
    var uniques,
        trueUnique,
        spanBackgrounds = [];

    $("#box span").each(function (s) {
      spanBackgrounds.push(this.style.background);
    });

    uniques = _.uniq(spanBackgrounds);

    if (cnt(uniques[0], spanBackgrounds) > 1) {
      trueUnique = uniques[1];
    } else {
      trueUnique = uniques[0];
    }
    $("#box span[style='background-color: " + trueUnique + ";']").click();
  }

  function cnt(needle, haystack) {
    return haystack.reduce(function(n, val) {
      return n + ( val === needle);
    }, 0);
  }
  function run() {
    if (Number($(".time").text(), 10) > 0) {
      clickSpan();
    }
  }
})(window, jQuery);