archive.php – colour coded according to category

Hi ??

Am currently coding my first wordpress site, and would like some help with something?

My client has 3 main categories with sub categories under these. These 3 main categories are colour coded red, blue and green. When these are found on a monthly or yearly archive results page, I would like the results to be shown colour coded, so that one main category and its sub categories would be blue, and so on.

This is my current loop:

<?php while (have_posts()) : the_post(); ?>
<div id="posts">
<div style="float: left;"><img src="images/postimage.jpg" /></div>
<div class="poststext">

<?php if (in_category('5') ) { ?>
<h2><a style="color:#ff3300;" href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
<? }elseif (in_category('4') ) { ?>
<h2><a style="color:#c9cc07;" href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
<? }elseif (in_category('3') ) { ?>
<h2><a style="color:#0099ff;" href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
<? } else {}?>

<p><?php the_excerpt() ?> <a style="color:#ff3300; text-decoration:none;" href="<?php the_permalink() ?>"><strong>MORE...</strong></a><br />
<div id="posted">Posted in <?php the_category(', ') ?></div></p>
</div>
<div class="space2"></div>
</div>
<?php endwhile; ?>

At the moment, it doesn’t show the title/permalink or the excerpt, but shows the “More…” link and the category it’s posted in.

I was wondering whether anyone could give me some pointers?

Thankyous~