黑白网页恢复彩色方法代码
新建油猴脚本放进去保存

// ==UserScript==
// @name         黑白网页恢复彩色
// @namespace    http://tampermonkey.net/
// @version      1.4.5
// @license      MIT
// @description  黑白网页恢复彩色，匹配所有网页，即装即用。
// @author       https://greasyfork.org/users/574395-frammolz-amanda
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    var filter = document.createElement('style');
    filter.type = 'text/css';
    document.getElementsByTagName('head')[0].appendChild(filter);
    filter.appendChild(document.createTextNode("*{-webkit-filter:none!important;}"));
    var windowUrl = window.location.href;
    var baidudesk = /https:\/\/www.baidu.com/;
    var baidumobile = /https:\/\/m.baidu.com/;
    var kafan = /https:\/\/bbs.kafan.cn/;
    var qpic = /https:\/\/www.58pic.com/;
    if( windowUrl.match(baidudesk)){
        document.getElementById("s_lg_img").setAttribute("src","https://www.baidu.com/img/flexible/logo/pc/index.png");
        document.getElementById("s_lg_img_new").setAttribute("src","https://www.baidu.com/img/flexible/logo/pc/index.png");
        document.getElementById("su").style.setProperty("background-color","#4e6ef2","important");
        if (document.getElementsByClassName("index-logo-src").length==1){
            document.getElementsByClassName("index-logo-src")[0].setAttribute("src","https://www.baidu.com/img/flexible/logo/pc/result.png");
            document.getElementsByClassName("index-logo-peak")[0].setAttribute("src","https://www.baidu.com/img/flexible/logo/pc/result.png");
            document.getElementsByClassName("index-logo-srcnew")[0].setAttribute("src","https://www.baidu.com/img/flexible/logo/pc/result.png");
        }
    }
    if( windowUrl.match(baidumobile)){
        document.getElementById("logo").getElementsByTagName("a")[0].getElementsByTagName("img")[0].setAttribute("src","https://www.baidu.com/img/flexible/logo/logo_web.png");
        document.getElementById("index-bn").style.setProperty("background-color","#4e6ef2","important");
    }
    if( windowUrl.match(kafan)){
        document.getElementById("nv_forum").style.setProperty("background-blend-mode","normal");
    }
    if( windowUrl.match(qpic)){
        document.documentElement.style.setProperty("-webkit-filter","none","important");
    }
})();