natalializon on "Possible to change my link color in Contempt?"

I'm using the Contempt style sheet, and am trying to change the color of links that have been visited to a purple instead of a light pink. I have tried editing the CSS sheet but am not sure how to do so exactly. I think it is one of these lines:

h1,h1 a,h1 a:hover,h1 a:visited,.description {
text-decoration:none;
color:#990;
}

h2,h2 a,h2 a:visited,h3,h3 a,h3 a:visited {
color:#333;
}

h2,h2 a,h2 a:hover,h2 a:visited,h3,h3 a,h3 a:hover,h3 a:visited,#sidebar h2,#wp-calendar caption,cite {
text-decoration:none;
}

Oh and my blog is the following: http://natalializon.wordpress.com/

Thank you!