diff --git a/examples/instance_segmentation/README.md b/examples/instance_segmentation/README.md
index 3b77896b6c1366d04c166f103277ee4dd63fc978..8d9f6f47254d385cf603aab89ac18c7e8737e4da 100644
--- a/examples/instance_segmentation/README.md
+++ b/examples/instance_segmentation/README.md
@@ -3,7 +3,7 @@
 ## Annotation
 
 ```bash
-labelme data_annotated --labels labels.txt --nodata --validatelabel exact
+labelme data_annotated --labels labels.txt --nodata --validatelabel exact --config '{shift_auto_shape_color: -2}'
 labelme data_annotated --labels labels.txt --nodata --labelflags '{.*: [occluded, truncated], person-\d+: [male]}'
 ```
 
diff --git a/examples/semantic_segmentation/README.md b/examples/semantic_segmentation/README.md
index 429e76a157e9cfb7cf72317a054628c3c8af5933..3b08b752d73fc07120d4953406bd8a114a422afb 100644
--- a/examples/semantic_segmentation/README.md
+++ b/examples/semantic_segmentation/README.md
@@ -3,7 +3,7 @@
 ## Annotation
 
 ```bash
-labelme data_annotated --labels labels.txt --nodata --validatelabel exact
+labelme data_annotated --labels labels.txt --nodata --validatelabel exact --config '{shift_auto_shape_color: -2}'
 ```
 
 ![](.readme/annotation.jpg)
diff --git a/examples/video_annotation/README.md b/examples/video_annotation/README.md
index de1947128b69ac6b5dba72a8e27aa302ca5aae70..852fab7e608161ed98c48ea5039d250c0fe0bb93 100644
--- a/examples/video_annotation/README.md
+++ b/examples/video_annotation/README.md
@@ -4,7 +4,7 @@
 ## Annotation
 
 ```bash
-labelme data_annotated --labels labels.txt --nodata --keep-prev
+labelme data_annotated --labels labels.txt --nodata --keep-prev --config '{shift_auto_shape_color: -2}'
 ```
 
 <img src=".readme/00000100.jpg" width="49%" /> <img src=".readme/00000101.jpg" width="49%" />
diff --git a/labelme/app.py b/labelme/app.py
index 37425bf418bb8f595b8ef273a574c3152d74e051..3a8ab41db3eb5068932bf0af9a116c553ceb0311 100644
--- a/labelme/app.py
+++ b/labelme/app.py
@@ -993,7 +993,7 @@ class MainWindow(QtWidgets.QMainWindow):
 
     def _get_rgb_by_label(self, label):
         item = self.uniqLabelList.findItems(label, Qt.MatchExactly)[0]
-        label_id = self.uniqLabelList.indexFromItem(item).row() - 1
+        label_id = self.uniqLabelList.indexFromItem(item).row() + 1
         label_id += self._config['shift_auto_shape_color']
         return LABEL_COLORMAP[label_id % len(LABEL_COLORMAP)]