Change the Product Color in the Cart

Hi guys

I need to change the color for my product discriptions in the cart section of my website from transparent to black.

I have tried pasting this into my CSS with out any luck, am i doing something wrong?

.entry-content a, .entry-content a:visited, #secondary a, #secondary a:visited, #masthead .hgroup a, #masthead .hgroup a:visited {
color: #262b30;
}