jaro.user.js

// ==UserScript==
// @name           jaro
// @namespace      http://d.hatena.ne.jp/snaka72/
// @require        http://gist.github.com/raw/3242/9dc0cdee5e975d275c7ab71f581d272eb316674f/dollarX.js
// @include        http://www.google.com/*
// @include        http://www.google.co.jp/*
// ==/UserScript==
(function() {
  const sites = [
    /^https?:¥/¥/¥w+¥.designlinkdatabase¥.net/,
  ];

  $X('/html/body/div[4]/div/ol/li/h3/a').forEach(function(ele){
    sites.forEach(function(site) {
      if (ele.href.match(site)) {
        [ele.parentNode, ele.parentNode.parentNode].forEach(function(ele){ with(ele){
          style.opacity = '0.3'
        }});
      }
    });
  });

})();