Código HTML:
<html>
<head>
<title></title>
<style type="text/css">
td .subC1
{
background-color: #FFFF00;
font-family:Arial, Helvetica, sans-serif;
font-size:10px;
color:#FF0000;
}
td .subC2
{
background-color: #00FFFF;
font-family:Arial, Helvetica, sans-serif;
font-size:10px;
color:#FF0000;
}
</style>
</head>
<body>
<table>
<tr>
<td class="subC1">Color 1</td>
<td class="subC2">Color 2</td>
</tr>
</table>
</body>
</html>
Probalo así!