If you look at teh source of the page, yo will see the area you are interested is this code:
HTML Code:
<div id="recent-comments-3" class="widget widget_recent_comments">
<div class="widget-title">
<h3>Senaste kommentarer</h3>
</div>
<ul id="recentcomments">
<li class="recentcomments">admin om
<a href="http://didring.se/wordpress/archives/27#comment-7">Namninsamling</a>
</li>
<li class="recentcomments">admin om
<a href="http://didring.se/wordpress/archives/27#comment-6">Namninsamling</a>
</li>
</ul>
</div>
to make the 'admin om' text to ...say blue, you would code
HTML Code:
#recentcomments li.recentcomments {color: blue;}
and this would cchange the text 'admin om' to blue, but it would also change the text 'Namninsamling' to blue unless there was another specific CSS selector/rule changing it to another color (Cascading Style Sheets...children inherit the settings of the parent). If there isn't and you wanted it to be ...red, you would need to set it so you would have
HTML Code:
#recentcomments li.recentcomments {color: blue;}
#recentcomments li.recentcomments a {color: red;}