Index: /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatDarkLaf.properties
===================================================================
--- /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatDarkLaf.properties	(revision 35696)
+++ /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatDarkLaf.properties	(revision 35697)
@@ -2,4 +2,8 @@
 # License: GPL. For details, see LICENSE file.
 #
+
+TabbedPane.selectedBackground=darken($TabbedPane.background,5%,derived noAutoInverse)
+TabbedPane.hoverColor=darken($TabbedPane.background,7%,derived noAutoInverse)
+
 
 #---- NamedColorProperty ----
Index: /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatLightLaf.properties
===================================================================
--- /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatLightLaf.properties	(revision 35697)
+++ /applications/editors/josm/plugins/flatlaf/src/org/openstreetmap/josm/plugins/flatlaf/FlatLightLaf.properties	(revision 35697)
@@ -0,0 +1,5 @@
+#
+# License: GPL. For details, see LICENSE file.
+#
+
+TabbedPane.selectedBackground=darken($TabbedPane.background,5%,derived)