Patch logout button in account

app/src/main/res/layout/activity_account.xml

@@ -100,7 +100,8 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Deconnexion"
-        android:backgroundTint="@color/orange"
+        android:background="#FFFFFF"
+        android:backgroundTint="#FFFFFF"
         app:layout_constraintBottom_toBottomOf="@+id/relativeLayout"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"