diff --git a/gtk2_ardour/themes/adwaita_dark-ardour.colors b/gtk2_ardour/themes/adwaita_dark-ardour.colors
index f81b3107a5..fb1ff71835 100644
--- a/gtk2_ardour/themes/adwaita_dark-ardour.colors
+++ b/gtk2_ardour/themes/adwaita_dark-ardour.colors
@@ -492,7 +492,7 @@
     <ColorAlias name="transport loop rect" alias="alert:green"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="widget:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/blueberry_milk-ardour.colors b/gtk2_ardour/themes/blueberry_milk-ardour.colors
index e78a7c0a57..3cb7dd5596 100644
--- a/gtk2_ardour/themes/blueberry_milk-ardour.colors
+++ b/gtk2_ardour/themes/blueberry_milk-ardour.colors
@@ -485,7 +485,7 @@
     <ColorAlias name="transport loop rect" alias="alert:blue"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="alert:red"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/caineville-ardour.colors b/gtk2_ardour/themes/caineville-ardour.colors
index 4eee14fa3a..2140a3d573 100644
--- a/gtk2_ardour/themes/caineville-ardour.colors
+++ b/gtk2_ardour/themes/caineville-ardour.colors
@@ -486,7 +486,7 @@
     <ColorAlias name="transport loop rect" alias="neutral:foreground"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:orange"/>
     <ColorAlias name="transport punch rect" alias="theme:contrasting clock"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/captain_light-ardour.colors b/gtk2_ardour/themes/captain_light-ardour.colors
index f10a06cb47..ec9548b51c 100644
--- a/gtk2_ardour/themes/captain_light-ardour.colors
+++ b/gtk2_ardour/themes/captain_light-ardour.colors
@@ -489,7 +489,7 @@
     <ColorAlias name="transport loop rect" alias="midi meter 54"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="alert:red"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/clear_gray-ardour.colors b/gtk2_ardour/themes/clear_gray-ardour.colors
index 17d6445434..027a718d96 100644
--- a/gtk2_ardour/themes/clear_gray-ardour.colors
+++ b/gtk2_ardour/themes/clear_gray-ardour.colors
@@ -486,7 +486,7 @@
     <ColorAlias name="transport loop rect" alias="theme:contrasting clock"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:red"/>
     <ColorAlias name="transport punch rect" alias="alert:red"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/cubasish-ardour.colors b/gtk2_ardour/themes/cubasish-ardour.colors
index 30197cfb9a..7bde0e507e 100644
--- a/gtk2_ardour/themes/cubasish-ardour.colors
+++ b/gtk2_ardour/themes/cubasish-ardour.colors
@@ -486,7 +486,7 @@
     <ColorAlias name="transport loop rect" alias="neutral:backgroundest"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="theme:contrasting clock"/>
     <ColorAlias name="transport punch rect" alias="alert:red"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/dark-ardour.colors b/gtk2_ardour/themes/dark-ardour.colors
index 612e0bdf2e..ac5f93a6c6 100644
--- a/gtk2_ardour/themes/dark-ardour.colors
+++ b/gtk2_ardour/themes/dark-ardour.colors
@@ -489,7 +489,7 @@
     <ColorAlias name="transport loop rect" alias="widget:blue"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="widget:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/diehard3-ardour.colors b/gtk2_ardour/themes/diehard3-ardour.colors
index 82c7183bdd..50383ec6b8 100644
--- a/gtk2_ardour/themes/diehard3-ardour.colors
+++ b/gtk2_ardour/themes/diehard3-ardour.colors
@@ -487,7 +487,7 @@
     <ColorAlias name="transport loop rect" alias="alert:green"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="widget:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/recbox-ardour.colors b/gtk2_ardour/themes/recbox-ardour.colors
index 672bb983bc..3389888718 100644
--- a/gtk2_ardour/themes/recbox-ardour.colors
+++ b/gtk2_ardour/themes/recbox-ardour.colors
@@ -487,7 +487,7 @@
     <ColorAlias name="transport loop rect" alias="alert:green"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="widget:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/unastudia-ardour.colors b/gtk2_ardour/themes/unastudia-ardour.colors
index 4346979f22..23567470e0 100644
--- a/gtk2_ardour/themes/unastudia-ardour.colors
+++ b/gtk2_ardour/themes/unastudia-ardour.colors
@@ -485,7 +485,7 @@
     <ColorAlias name="transport loop rect" alias="alert:cyan"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:blue"/>
     <ColorAlias name="transport punch rect" alias="alert:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>
diff --git a/gtk2_ardour/themes/xcolors-ardour.colors b/gtk2_ardour/themes/xcolors-ardour.colors
index 6d147254fa..bf853eed5f 100644
--- a/gtk2_ardour/themes/xcolors-ardour.colors
+++ b/gtk2_ardour/themes/xcolors-ardour.colors
@@ -486,7 +486,7 @@
     <ColorAlias name="transport loop rect" alias="alert:green"/>
     <ColorAlias name="transport marker bar" alias="neutral:background2"/>
     <ColorAlias name="transport option button: fill" alias="widget:bg"/>
-    <ColorAlias name="transport option button: fill active" alias="widget:bg"/>
+    <ColorAlias name="transport option button: fill active" alias="theme:contrasting less"/>
     <ColorAlias name="transport option button: led active" alias="alert:green"/>
     <ColorAlias name="transport punch rect" alias="widget:ruddy"/>
     <ColorAlias name="transport recenable button: fill" alias="widget:bg"/>