Need Help Changing Specific Page Colors

[liunx]

I want to change a specific part of my site to a different color then the default BG. I don't know if I would have to create a frame or what....I'm using Joomla CMS FYI, any help is appreciated.

Example: <!-- w --><a class="postlink" href="http://www.kamikazeproductions.com/sitehelp.jpg">www.kamikazeproductions.com/sitehelp.jpg</a><!-- w -->

Site: <!-- w --><a class="postlink" href="http://www.kamikazeproductions.comThis">www.kamikazeproductions.comThis</a><!-- w --> may require further tweaking, but change the Embedded Style Sheet:
<style type="text/css">
<!--
body {
margin-top: 0px;
margin-left: 0px;
background: #000;
}
#main_table {
background: #fff;
}
.blog, #center_area {
background: #999;
}
.bottom {
color: #ccc;
}
.bottom a {
color: #666;
}
-->
</style>