Improve usage of twig ternary

Author: Seb33300

Resources/views/Collector/security.html.twig

@@ -5,9 +5,9 @@
 {% block toolbar %}
     {% if collector.token %}
         {% set is_authenticated = collector.enabled and collector.authenticated  %}
-        {% set color_code = is_authenticated ? '' : 'yellow' %}
+        {% set color_code = not is_authenticated ? 'yellow' %}
     {% else %}
-        {% set color_code = collector.enabled ? 'red' : '' %}
+        {% set color_code = collector.enabled ? 'red' %}
     {% endif %}
 
     {% set icon %}