http://game.ioxapp.com/eye-test/game.html

min

javascript:window.setInterval(function(){var c=$("#box span:first-child").css("background-color"),o=$("#box span:nth-child(2)").css("background-color");c!=o&&$("#box span:first-child").click(),$("#box span").each(function(){var o=$(this).css("background-color");return c!=o?($(this).click(),!1):void(c=o)})},10);

speedhack.js

window.setInterval(function() {
	var firstCol = $('#box span:first-child').css('background-color');
	var secondCol = $('#box span:nth-child(2)').css('background-color');

	if (firstCol != secondCol) {
		$('#box span:first-child').click();
	}

	$('#box span').each(function(i) {
     var curCol = $(this).css('background-color');
	 if (firstCol != curCol) {
	   $(this).click();
	   return false;
	 }
	 firstCol = curCol;
	});
}, 10);