<!DOCTYPE html>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
  <tr style="background: gray">
    <td>
      Text should have a gray background.
    </td>
  </tr>
  <tr>
    <td style="background-color: green">
      Another line in green.
    </td>
  </tr>
</table>