The thing is in order to use it you have to add a class to the link to your external stylesheet like so
<link rel="stylesheet" href="effects.css" class="cssfx">
and since wordpress uses it's own template tag to link the main stylesheet I'm not sure how I would do this. Does anyone know? Is it really a bad idea to just write the above code in my header.php instead of using wordpress's template tag to do the same?