1 files changed, 4 insertions, 0 deletions
diff --git a/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css b/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
index cffedf0b..38db4785 100644
--- a/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
+++ b/desktop-themes/TraditionalOk/gtk-3.0/mate-applications.css
@@ -298,6 +298,10 @@ NaTrayApplet {
 }
 
 /* volume applet, brightness applet */
+.mate-panel-applet-slider {
+    background: transparent;
+}
+
 .mate-panel-applet-slider .frame {
     background-color: @theme_bg_color;
     border-image: none;