modified colour of heading from green to red on final configure page when paramaters.ini is not writable. Green indicates everything was ok

Resources/public/css/configure.css

@@ -69,6 +69,11 @@ h2
 
 }
 
+h2.configure-error
+{
+    background-color: #CC514F;
+}
+
 p
 {
     line-height:    20px;

Resources/views/final.html.twig

@@ -6,7 +6,7 @@
     {% if is_writable %}
     <h2>Your distribution is configured!</h2>
     {% else %}
-    <h2>Your distribution is almost configured but...</h2>
+    <h2 class="configure-error">Your distribution is almost configured but...</h2>
     {% endif %}
     <h3>
         <span>