diff --git a/src/wireviz/Harness.py b/src/wireviz/Harness.py
index 00bade3..2928640 100644
--- a/src/wireviz/Harness.py
+++ b/src/wireviz/Harness.py
@@ -360,13 +360,12 @@ class Harness:
             elif mate.shape[-1] == '>':
                 dir = 'forward'
             else:
-                dir = 'none'  # should not happen
+                dir = 'none'
 
             if isinstance(mate, MatePin):
                 color = '#000000'
             elif isinstance(mate, MateComponent):
-                # color = '#000000:#ffffff:#000000'  # GraphViz bug? 'back' and 'both' do not work with multicolor edges
-                color = '#000000'
+                color = '#000000:#ffffff:#000000'  # GraphViz bug? 'back' and 'both' do not work with multicolor edges
             else:
                 raise Exception(f'{mate} is an unknown mate')