Styling unread form entries in dashboard

You can target unread entries in the admin. They have a class of .lead_unread. You can use something like this:

[css]
.lead_unread td {
  background-color: yellow;
}

That will target the unread entries. You want to add that CSS only to the admin pages though (adding that to your theme's stylesheet would not work.) You can use a function like this in your functions.php:

[php]
function load_custom_wp_admin_style() {
    wp_register_style( 'custom_wp_admin_css', get_stylesheet_directory_uri() . '/wp-admin.css', false, get_bloginfo('version') );
    wp_enqueue_style ( 'custom_wp_admin_css' );
}
add_action( 'admin_enqueue_scripts', 'load_custom_wp_admin_style' );

That will load a stylesheet called "wp-admin.css" in your admin pages only. The file would have to be located in your theme directory. And in it you would add just those couple lines I posted initially, targeting the unread entries. Here is the WordPress reference for wp_enqueue_style: http://codex.wordpress.org/Function_Reference/wp_enqueue_style

Sorry, I was unclear from your first post. You want to change the display of the information in the form widget, not in the list of entries? It does not appear there are any classes applied to the widget columns which we can use. I'll check with the developers about the possibility of adding some.

I was able to target the unread column in the widget by adding this CSS to the admin, but that highlights the number, no matter what it is (even if there are zero unread.)

Screenshot: http://minus.com/lxjFDVXmYHEdo

[css]
#rg_forms_dashboard tr td:first-child + td a {
    color:green!important;
    font-size:24px!important;
}

You could use jQuery to remove the custom style (from above) from the table data cell when it didn't contains a zero, using the .contains selector: http://api.jquery.com/contains-selector/

Agreed. I sent it to the development team. Hopefully we can get it into a future release.