SkyfallDarkTeal/gtk-3.0/mate-applications.css

@@ -632,6 +632,24 @@ GvcMixerDialog notebook.frame box scrolledwindow.frame {
     padding: 0;
 }
 
+/* Can be seen in volume control quick access */
+.mate-panel-applet-slider.background {
+    background: solid;
+    background-color: transparent;
+}
+
+.mate-panel-applet-slider frame {
+    background-color: rgba(0,0,0,0.64);
+    padding: 1px;
+    margin: 0px;
+    border-radius:4px;
+    box-shadow: inset  0px  1px shade(@theme_selected_bg_color, 0.75),
+                inset  1px  0px shade(@theme_selected_bg_color, 0.75),
+                inset -1px  0px shade(@theme_selected_bg_color, 0.75),
+                inset  0px -1px shade(@theme_selected_bg_color, 0.75);
+}
+
+
 /***********************
  * mate-control-center *
  ***********************/