diff --git a/py/hexagram/cluster.py b/py/hexagram/cluster.py
index 0479d88..cfe49ea 100644
--- a/py/hexagram/cluster.py
+++ b/py/hexagram/cluster.py
@@ -206,6 +206,26 @@ class Cluster():
         pattern = HexagonPattern()
         pattern.fill(cr)
 
+        # Top dark area
+        cr.set_source_rgba(0, 0, 0, 0.5)
+        cr.rectangle(0, 0, self.WIDTH, 96)
+        cr.fill()
+
+        cr.set_source_rgba(1, 1, 1, 0.25)
+        cr.move_to(0, 96)
+        cr.line_to(self.WIDTH, 96)
+        cr.stroke()
+
+        # Bottom dark area
+        cr.set_source_rgba(0, 0, 0, 0.5)
+        cr.rectangle(0, self.HEIGHT - 52, self.WIDTH, 52)
+        cr.fill()
+
+        cr.set_source_rgba(1, 1, 1, 0.25)
+        cr.move_to(0, self.HEIGHT - 52)
+        cr.line_to(self.WIDTH, self.HEIGHT - 52)
+        cr.stroke()
+
         for gauge in self.gauges:
             gauge.draw_bg(cr)