diff --git a/README.md b/README.md
index 865da60..5ea4f88 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,15 @@ Diagramme de classe de l'application
 ```plantuml
 @startuml
 
+skinparam class {
+    BackgroundColor White
+    BorderColor Black
+    FontColor Black
+}
+
+skinparam classAttributeBackgroundColor<<User>> #FF0000
+skinparam classAttributeBorderColor<<User>> #FF0000
+skinparam classAttributeFontColor<<User>> Black
 
 Class User {
     - String pseudo