diff --git a/labelme/config/default_config.yaml b/labelme/config/default_config.yaml
index 34ced19b36d36dc04c189b1ade6940e71eb170e0..260066f65b8855c3a2ea43a72097e4087d5a0167 100644
--- a/labelme/config/default_config.yaml
+++ b/labelme/config/default_config.yaml
@@ -22,7 +22,7 @@ label_colors: null
 shape:
   # drawing
   line_color: [0, 255, 0, 128]
-  fill_color: [0, 255, 0, 64]
+  fill_color: [0, 255, 0, 0]  # transparent
   vertex_fill_color: [0, 255, 0, 255]
   # selecting / hovering
   select_line_color: [255, 255, 255, 255]