[WorldCraft]

For .toplinks ul.isuser .notifications .popupbody li a{

Remove first two lines, that color has an invalid HEX code:

    /*color: {vb:stylevar navbar_selected_popup_body_a_Color};*/
color: #333;

Replace with: color:

{vb:stylevar navbar_popupmenu_link_color};

Also you should remove:

/*position: relative;*/

And the text should be black again.

Also, you really should only add custom CSS to the additional.css, and not the specific style sheets. It's a lot easier to track down CSS changes!!! This also will help prevent template problems or conflicts when upgrading versions.