重用工具栏/按钮图标很好，Apple可能会欣赏UI的一致性。许多应用程序使用应用程序商店中未包含在核心集中的Apple图标。然而，使用更大的艺术将不受欢迎，如飞溅艺术/股票图像。

Reusing toolbar / button icons is fine and Apple probably appreciates UI consistency. Many many apps make use of the Apple icons not included in the core set which are in the app store. Using 'larger' art will be frowned upon though, like splash arts / stock images.