Mootools alternative color text effect

var highlight = true;
 
var periodicalFunction = function(){
	if(highlight) {
		this.tween('color', '#F89838'); //Change to your custom color
		highlight = false;
	} else {
		this.tween('color', '#000000'); //Change to your custom color
		highlight = true;
	}
}
 
window.addEvent('domready', function() {
 
	if($defined($$('.highlight'))) {
		var passedVar = $$('.highlight');
		var periodicalFunctionVar = periodicalFunction.periodical(700, passedVar); //Change to your custom time
	}
 
});

<ul>
	<li>No highlighted</li>
	<li class="highlight">Highlighted</li>
	<li>No highlighted</li>
	<li class="highlight">Also highlighted</li>
</ul>