How to change appearance of Meta links?

Hi! Thanks for all the help I’ve gotten here. I’m almost finished, but I got at least one more question.

I want to have the Meta links in black in my black sidebar, preferably with a very small font, so they are there, but nobody sees them. This is because they’re convenient, but apparently needed only by me. How do I do it? The links are created by a PHP function with no apparent way to change their appearance, and my recent experimentations for assigning a CSS style for them somehow did not work.

What I tried to do in CSS:

hiddenlink{
color: #000000;
font-family: Times New Roman;
font-size: 6px;
}

hiddenlink:link, hiddenlink:visited{
color: #000000;
font-family: Times New Roman;
font-size: 6px;
}

What I tried to do in sidebar.php:

<div id="hiddenlink">
   <?php wp_register(); ?>
   <?php wp_loginout(); ?>
   <?php wp_meta(); ?>
</div>