Use the same default background color for offer description panel as

for the home page.

repanier/templates/repanier/order_form.html

@@ -37,7 +37,7 @@
             <h4 class="panel-title">{{ permanence.get_permanence_customer_display }}</h4>
         </div>
         <div id="collapse-offer-description" class="panel-collapse collapse">
-            <div class="panel-body bg-primary">
+            <div class="panel-body">
                 <div class="col-xs-12">
                     {{ permanence.offer_description | safe }}
                 </div>