Here's how to manually call Gravity Forms CSS. For Genesis users, this is important because our widget may call the form up, as in Scribble, but the CSS is not called because the shortcode is never technically called on that page.
[php]
if ( is_home() )
wp_enqueue_style("gforms_css", GFCommon::get_base_url() . "/css/forms.css", null, GFCommon::$version);
[/php]