为一组元素循环指定背景色

$(".userPicback").each(function(index){
    var color = ['#fca33d','#fd5c63','#f89280','#ff6600','#de3232','#fd8362'];//背景色数组
	var sn = parseInt(index%6)+1;
    $(this).css("background-color",color[sn]) ;
});