diff --git a/calendar/templates/mobile/app.css b/calendar/templates/mobile/app.css
index d1cb100715..52cef5bd58 100644
--- a/calendar/templates/mobile/app.css
+++ b/calendar/templates/mobile/app.css
@@ -472,7 +472,8 @@ Hide subsequent headers in week view with non-consolidated owners
   border-bottom: 1px solid silver;
   white-space: nowrap;
   overflow: hidden;
-  background-color: white;
+  color: white;
+  background: #2D6393;
 }
 .hideDayColHeader .calendar_calDayColHeader > div[data-date] {
   position: fixed;