请教一个正则表达式问题,高手过来看看哈`

<td><span class="AnnRed">(?<msg>.*)</span></td>

<td><span class="AnnYellow">(?<msg>.*)</span></td>

Regex regex = new Regex("<td><span class=\"[AnnYellow]|[AnnRed]\">(?<msg>.*)</span></td>");

怎么写让这个表达试能匹配上面两种结果

就是说 Regex regex = new Regex<td><span class="AnnRed">(?<msg>.*)</span></td>");

Regex regex = new Regex<td><span class="AnnYellow">(?<msg>.*)</span></td>");

这两种都要取到｀

<td><span class="(?:\w+)">(?<msg>.*)</span></td>