diff --git a/README.md b/README.md
index 807d992..0d59360 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,9 @@ Commentaire *--> Carte
 Pack --|> Carte
 Camp --|> Carte
 
+skinparam class Commentaire {
+    BackgroundColor #FF0000
+}
 hide circle
 allowmixing
 skinparam classAttributeIconSize 0