代码示例：（标识：css_outline-color-hex）
<!DOCTYPE html>
<html>
<head>
<style>
p.ex1 {
border: 2px solid black;
outline-style: solid;
outline-color: #ff0000; /* red */
}
p.ex2 {
border: 2px solid black;
outline-style: dotted;
outline-color: #0000ff; /* blue */
}
p.ex3 {
border: 2px solid black;
outline-style: solid;
outline-color: #bbbbbb; /* grey */
}
</style>
</head>
<body>
<h1>outline-color 属性</h1>
<p>也可以使用十六进制值（HEX）规定轮廓颜色：</p>
<p class="ex1">红色的实线轮廓。</p>
<p class="ex2">蓝色的点状轮廓。</p>
<p class="ex3">灰色的实线轮廓。</p>
</body>
</html>
