Fixed [MDL-12830]

theme/formal_white/fw_color.css

@@ -407,6 +407,21 @@ table.minicalendar tr td.weekend {
 #mod-forum-index .unread {
 }
 
+/***
+ *** Error message
+ ***/
+
+.errorbox {
+/*   color:#ffffff; */
+   border-color:#990000;
+   background-color:#FEF9F6;
+ }
+
+.errorboxcontent {
+   background-color:#FEF9F6;
+}
+ 
+
 /***
  *** Grade
  ***/

theme/formal_white/fw_layout.css

@@ -329,4 +329,11 @@ table.calendarmonth tr td  {
    padding-top: 4px; 
 } 
 
+/***
+ *** Error message
+ ***/
 
+.errorbox {
+/*   color:#ffffff; */
+   border-width: 2px;
+}