<table border="1">
  <colgroup>
    <col span="1" style="background-color: #ffe0e0;">
    <col span="1" style="background-color: #e0ffe0;">
  </colgroup>

  <tr>
    <th>Name</th>
    <th>Score</th>
  </tr>
  <tr>
    <td>Alice</td>
    <td>90</td>
  </tr>
</table>