http://game.ioxapp.com/color/ hack

console

setInterval(function () {
    var change = {};
 
    $('#box span').each(function () {
        var $this = $(this),
            key = $this.css('background-color');
 
        if (!(key in change)) {
            change[key] = {
                'element': $this,
                'count': 0
            };
        }
 
        change[key]['count']++;
    });
 
    if (change.length === 0) {
        return;
    }
 
    $.each(change, function (index, element) {
        if (element['count'] === 1) {
            element['element'].trigger('click');
        }
    });
}, 50);