Styling:

- support references in color functions
- added test for using color functions in styling

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemeFileEditor.java

@@ -131,7 +131,9 @@ class FlatThemeFileEditor
 			darkLafMenuItem.setSelected( true );
 
 		// highlight selected tab
-		tabbedPane.setStyle( "[light]selectedBackground: #fff; [dark]selectedBackground: #303234" );
+		tabbedPane.setStyle(
+			"[light]selectedBackground: lighten($TabbedPane.background,5%);" +
+			" [dark]selectedBackground: darken($TabbedPane.background,5%)" );
 
 		// add "+" button to tabbed pane
 		newButton = new JButton( new FlatSVGIcon( "com/formdev/flatlaf/themeeditor/icons/add.svg" ) );

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatDarkLaf.properties

@@ -14,11 +14,6 @@
 # limitations under the License.
 #
 
-#---- TabbedPane ----
-
-#TabbedPane.selectedBackground = darken($TabbedPane.background,5%)
-
-
 #---- FlatThemeEditorPane ----
 
 FlatThemeEditorPane.background = #2b2b2b

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLightLaf.properties

@@ -14,11 +14,6 @@
 # limitations under the License.
 #
 
-#---- TabbedPane ----
-
-#TabbedPane.selectedBackground = lighten($TabbedPane.background,5%)
-
-
 #---- FlatThemeEditorPane ----
 
 FlatThemeEditorPane.background = #fff