Cambiare colore alle celle di una tabella

[satifal]

Guarda a me questo funziona:

<table>
<?php $x = 1; $x2 = 2; ?>
<?php if ($x==$x2) { ?>
<tr>
<td bgcolor="YELLOW">X:</td>
<td><label><?php echo $x; ?></label></td>
<td><label><?php echo $x2; ?></label></td>
</tr>
<?php } else { ?>
<tr>
<td bgcolor="YELLOW">X:</td>
<td  bgcolor="red"><label> <?php echo $x; ?></label></td>
<td  bgcolor="red"><label> <?php echo $x2; ?></label></td>
</tr>
<?php } ?> 
</table>