add div color

My code for “Posted on DATE and TIME by AUTHOR” looks like the following:
<div class="post">
<h2 id="post-<?php the_ID(); ?>">" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></h2>
<small>Posted on <?php the_time('F jS, Y') ?> by <?php the_author() ?></small>
I want “Posted on DATE and TIME by AUTHOR” to show up a different color. If its not already specified in my css file, how can I add a tag for just this to change color…I know the css commands, but not the php tags…Thanks