diff --git a/rtdata/themes/RawTherapee-GTK3-20_.css b/rtdata/themes/RawTherapee-GTK3-20_.css
index a2fadeca3..f32455ca3 100644
--- a/rtdata/themes/RawTherapee-GTK3-20_.css
+++ b/rtdata/themes/RawTherapee-GTK3-20_.css
@@ -324,6 +324,15 @@ scale:disabled trough {
     padding: 4px;
 }
 
+/* Better on/off state separation for text toggle buttons, e.g. auto-levels or histogram matching. */
+button.text-button {
+    background-image: linear-gradient(to bottom, rgba(100,100,100,.3), rgba(30,30,30,.3));
+}
+
+button.text-button:checked {
+    background-image: linear-gradient(to bottom, rgba(30,30,30,.3), rgba(0,0,0,.4));
+}
+
 separator {
     color: #363636;
     margin: 5px;
diff --git a/rtdata/themes/RawTherapee-GTK3-_19.css b/rtdata/themes/RawTherapee-GTK3-_19.css
index 8443768c3..cfbec4355 100644
--- a/rtdata/themes/RawTherapee-GTK3-_19.css
+++ b/rtdata/themes/RawTherapee-GTK3-_19.css
@@ -506,3 +506,11 @@ GtkNotebook {
     padding-left: 3px;
     padding-right: 3px;
 }
+
+GtkButton.text-button {
+    background-image: linear-gradient(to bottom, rgba(100,100,100,.3), rgba(30,30,30,.3));
+}
+
+GtkButton.text-button:checked {
+    background-image: linear-gradient(to bottom, rgba(30,30,30,.3), rgba(0,0,0,.4));
+}