Where would the code be to change the background for the comments?

used firebug to diagnose the comment portion and came up with this:

#comment, #author, #email, #url, .s-search, .easel_control_panel_widget input {
background: #000000;
border: 1px solid #000;
border-radius: 6px 6px 6px 6px;
color: #000000;
font-family: ‘Verdana’, sans-serif;
font-size: 12px;
padding: 2px;
}

doesn’t seem to work though.. Thanks!