diff --git a/bundles/org.eclipse.ui.themes/css/e4_preview_gtk.css b/bundles/org.eclipse.ui.themes/css/e4_preview_gtk.css
index c8dd132df1d..afa55f73283 100644
--- a/bundles/org.eclipse.ui.themes/css/e4_preview_gtk.css
+++ b/bundles/org.eclipse.ui.themes/css/e4_preview_gtk.css
@@ -122,7 +122,7 @@ CTabFolder.MArea {
 }
 
 CTabFolder Canvas {
-	background-color: #ffffff;
+	background-color: #f8f8f8;
 }
 
 .MTrimBar#org-eclipse-ui-main-toolbar {
diff --git a/bundles/org.eclipse.ui.themes/css/e4_preview_mac.css b/bundles/org.eclipse.ui.themes/css/e4_preview_mac.css
index 3a869957874..b426954c9d4 100644
--- a/bundles/org.eclipse.ui.themes/css/e4_preview_mac.css
+++ b/bundles/org.eclipse.ui.themes/css/e4_preview_mac.css
@@ -95,9 +95,8 @@ ColorDefinition#org-eclipse-ui-workbench-INACTIVE_TAB_TEXT_COLOR {
 }
 
 CTabFolder Canvas {
-	background-color: rgb(255, 255, 255);
+	  background-color: #f8f8f8;
 }
-
  
 .MTrimBar#org-eclipse-ui-trim-status {
 	background-color: #f8f8f8;
diff --git a/bundles/org.eclipse.ui.themes/css/e4_preview_win.css b/bundles/org.eclipse.ui.themes/css/e4_preview_win.css
index 713844c0a8d..9b30f814d06 100644
--- a/bundles/org.eclipse.ui.themes/css/e4_preview_win.css
+++ b/bundles/org.eclipse.ui.themes/css/e4_preview_win.css
@@ -96,7 +96,7 @@ CTabFolder.MArea {
 }
 
 CTabFolder Canvas {
-	background-color: #ffffff;
+	background-color: #f8f8f8;
 }
 
 .MTrimBar#org-eclipse-ui-main-toolbar {