tweak collapsed option view

Resources/public/css/colors.css

@@ -9,6 +9,10 @@ table.sonata-ba-list tfoot td {
     border-top: 1px solid #DDD;
 }
 
+a.sonata-ba-collapsed {
+    color: #404040;
+}
+
 /* Form */
 textarea.title {
     font-size: 1em;

Resources/views/CRUD/base_edit.html.twig

@@ -55,11 +55,12 @@ file that was distributed with this source code.
             {% endif %}
 
             {% for name, form_group in admin.formgroups %}
-                <fieldset>
+                <fieldset {% if form_group.collapsed %}class="sonata-ba-fielset-collapsed"{% endif %}>
                     <legend>
-                        {{ name|trans({}, admin.translationdomain) }}
                         {% if form_group.collapsed %}
-                            <a href="" class="sonata-ba-collapsed">{% trans from 'SonataAdminBundle' %}link_expand{% endtrans %}</a>
+                            <a href="" class="sonata-ba-collapsed" title="{% trans from 'SonataAdminBundle' %}link_expand{% endtrans %}">{{ name|trans({}, admin.translationdomain) }}</a>
+                        {% else %}
+                            {{ name|trans({}, admin.translationdomain) }}
                         {% endif %}
                     </legend>