/**
 * Jus' encapsulating to avoid pluting global scope.
 */
(function () {

  var kolorContainer = document.querySelector('#kolor-kolor')
    , buttons = document.querySelectorAll('#kolor-start, #kolor-restart')
    , endBlock = document.querySelector('#kolor-end-block')
    , interval;

  // NodeList does not implement array methods :(
  [].forEach.call(buttons, function (button) {
    button.innerHTML += ' (cheating)';
    button.addEventListener('click', startRobot);
  });

  /**
   * Find a color match and select it.
   */
  function findAndSelect() {
    var currentColor = kolorContainer.style.backgroundColor;
    [].some.call(document.querySelectorAll('#kolor-options li a'), function (a) {
      return a.style.backgroundColor == currentColor ? a.click() & true : false;
    });
  }

  /**
   * Start the robot.
   */
  function startRobot() {
    interval = setInterval(iterate, 50);
  }

  /**
   * Loop iteration.
   */
  function iterate() {
    endBlock.style.display != 'none' ? findAndSelect() : clearInterval(interval);
  }
})();