Introduce  for hx and buttons

Change-Id: I1f85548b1e39de13ca6474c8d29d10f502e0ee9f
diff --git a/templates/header.htm b/templates/header.htm
index ec1372d..02ede2d 100644
--- a/templates/header.htm
+++ b/templates/header.htm
@@ -22,6 +22,13 @@
         .form-check-label {
             margin-left: 1ex;
         }
+        h1, h2, h3 {
+            color: <?php echo $SERVICE_COLOR; ?>;
+        }
+        .btn-primary {
+            background-color: <?php echo $SERVICE_COLOR; ?>;
+            border-color: <?php echo $SERVICE_COLOR; ?>;
+        }
     </style>
 </head>