$(document).ready(function() {

    var text = $('.target');
    var original = text.css('background-color');
    var colors = ["#CCCCCC", "#333333", "#990099", "#1295A6", "#FFFF99"];
    var col = Math.floor(Math.random() * colors.length);
    text.css('background-color', colors[col]);

    var text = $('.target2');
    var original = text.css('background-color');
    var colors = ["#CCCCCC", "#333333", "#990099", "#1295A6", "#FFFF99"];
    var col = Math.floor(Math.random() * colors.length);
    text.css('background-color', colors[col]);

});

Setting Validate Copy Format

.target, .target2 {
  display: block;
  margin-bottom: 10px;
  width: 220px;
  background-color:#CC00CC;
}

Setting Validate Copy Format