How to make block title words themable in D6

Question

I need to have my block title for Newsletter Signup block appear like this:

Sign up for mail

Note: Sign up = red colored font for mail = blue colored font

Please help, I know how to override a block.tpl.php file, but I am not sure what my code would be to separate the word groups and add a div or span.

Answer 1

Quick and dirty in your block.tpl.php:

<?php
  if ($block->subject=='Sign up for mail') {
    $block->subject='<span class="red">Sign up</span> <span class="blue">for mail</span>';
  }
?>

And in your .css file:

.blue {
   color: blue;
}

.red {
    color: red;
}