Background color for cell id.

plot_transmission_timeline.py

@@ -194,7 +194,7 @@ if __name__ == "__main__":
     twin2 = ax.twinx()
     # Offset the right spine of twin2.  The ticks and label have already been
     # placed on the right by twinx above.
-    twin2.spines.right.set_position(("axes", 1.2))
+    twin2.spines.right.set_position(("axes", 0.6))
 
 
     # create list fo color indices