火狐浏览器的工具-附加组件-搜索安装stylish组件。 https://addons.mozilla.org/en-US/firefox/addon/stylish/
添加样式：
body { background-color:#C7EDCC !important; } div { background-color:#C7EDCC !important; } table { background-color:#C7EDCC !important; } td { background-color:#C7EDCC !important; } a:link { color:#000000!important; } a:visited { color:#00FF00!important; } a:hover { color:#0000FF!important; background:#00EE00!important; } a:active { color:#FF0000!important; background:#00EE00!important; }