diff --git a/README.md b/README.md
index ea5a668..579ea6f 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,12 @@
 $ tail -F /var/log/nginx/access.log | colr POST GET 404 500 search
 ```
 
+If you want to erase colors from STDIN, you can use `--erase` option.
+
+``` console
+$ any-colorful-command | colr --erase
+```
+
 ## Install
 
 **homebrew tap:**