merged from 1.5:

Enlarged the font-size of the calender popup and added the styles to gray out hidden sections on the course page.
My font tag hack to avoid that old font tags overwrite the styles killed all font formating in the resources written with HTML Editor. The Editor formats font sizes with font tags. It also makes pages failing the XHTML tests. Is really no other Editor out?

theme/orangewhite/styles_color.css

@@ -437,6 +437,15 @@ table.minicalendar {
 #course-user .logtable .r1 {
   background-color:#DFDFDF
 }
+#course-view .section.hidden *,
+#course-view .section.hidden .content,
+#course-view .section.hidden .side {
+  border-color:#EEE;
+  color:#AAA
+}
+#course-view .section.hidden .left {
+  background-color:#EEE
+}
 
 /***
  *** Doc
@@ -672,4 +681,4 @@ body#mod-quiz-report table#attempts .r1 {
 }
 .workshopassessmentheading {
   background-color:#FFEDCE
-}
+}

theme/orangewhite/styles_fonts.css

@@ -31,9 +31,9 @@
 .clearer {
   font-size:1px
 }
-* font {
+/** font {
   font-size:100%
-}
+}*/
 body {
   font-family:Verdana, Arial, Helvetica, sans-serif;
   font-size:100%
@@ -258,14 +258,16 @@ table.formtable tbody th {
 table.minicalendar {
   font-size:0.85em
 }
-.cal_popup_caption {
+.cal_popup_close {
   font-family:sans-serif;
   font-size:0.8em;
   font-weight:bold
 }
-.cal_popup_close {
-  font-family:sans-serif;
-  font-size:0.8em;
+.cal_popup_bg {
+  font-size:1.2em
+}
+.cal_popup_cg {
+  font-size:0.95em;
   font-weight:bold
 }
 #calendar .maincalendar .calendar-controls .current {
@@ -562,9 +564,9 @@ body#mod-forum-index .cell {
 #mod-resource-index .cell {
   font-size:0.85em
 }
-.mod-resource font {
+/*.mod-resource font {
   font-size:0.8em
-}
+}*/
 
 /***
  *** Modules:Scorm