<!--彩色标签云-->
let tags = document.querySelectorAll("#tag_cloud-2 a");
let colorArr = ["#428BCA", "#AEDCAE", "#ECA9A7", "#DA99FF", "#FFB380", "#D9B999"];
tags.forEach(tag => {
    tagsColor = colorArr[Math.floor(Math.random() * colorArr.length)];
    tag.style.backgroundColor = tagsColor;
});
<!--info-->
let info = document.getElementById('blog_info').querySelectorAll('.pull-right')
let colorArray = ["#428BCA", "#AEDCAE", "#ECA9A7", "#DA99FF", "#FFB380", "#D9B999"];
info.forEach(tag => {
    tagsColor = colorArr[Math.floor(Math.random() * colorArr.length)];
    tag.style.backgroundColor = tagsColor;
        });