Index: trunk/src/main/resources/XWiki/DatePickerExtension.xml
===================================================================
--- trunk/src/main/resources/XWiki/DatePickerExtension.xml	(revision 28680)
+++ trunk/src/main/resources/XWiki/DatePickerExtension.xml	(working copy)
@@ -921,6 +921,7 @@
         ,m : currentMonth
         ,y : currentYear
         ,b : badDates[daysIndex]
+        ,c : badDates[daysIndex] ? 'outbound' : ''
       };
       daysIndex++;
     }
@@ -944,7 +945,7 @@
           d : daysIndex
           ,m : currentMonth
           ,y : currentYear
-          ,c : ( switchNextMonth )
+          ,c : ( switchNextMonth || badDates[daysIndex])
                ? 'outbound' :
                (
                 ((daysIndex == this._todayDate.getDate()) &&