diff --git a/lib/xmet/spc.py b/lib/xmet/spc.py
index 1d1bc8f..c8dbcd0 100644
--- a/lib/xmet/spc.py
+++ b/lib/xmet/spc.py
@@ -629,7 +629,7 @@ class SPCOutlookLegend():
 
         cr.set_font_size(self.FONT_SIZE)
 
-        cr.set_source_rgba(0.2, 0.2, 0.2, 0.5)
+        cr.set_source_rgba(0.2, 0.2, 0.2, 0.1)
         draw_rounded_rect(cr, x, y, self.width, self.height, self.RADIUS)
 
         cr.fill()