For example, the icons for user applications are colorful and inviting, while utilities have a more serious appearance. Figure 10-2 shows user application icons in the top row and utility icons in the bottom row. These genres are further described in "User Application Icons" and "Utility Icons".Figure 10-2 Two icon genres: User application icons in top row; utility icons in bottom rowThe graphic flexibility of Aqua icons can also help users identify files associated with an application. In iTunes, for example, a visual cue provided in the application icon is carried over into icons for other files associated with iTunes, forming an icon family, as shown in Figure 10-3.