add red color to error log

@@ -83,7 +83,14 @@ public class CenterSwitchCtrl {
         StringBuilder result = new StringBuilder();
 
         for (String str : resultList) {
-            result.append(str).append("</br>");
+            if ("fail".indexOf(str) != -1){
+                result.append("<font color=\"red\">");
+                result.append(str);
+                result.append("</font>");
+            }else {
+                result.append(str);
+            }
+            result.append("</br>");
         }
 
         BaseResponse baseResponse = new BaseResponse();