The best Tiles communicate some info about the app, show off the personality of your brand, and look great beside all the other Tiles on the screen. Tiles can communicate info to the user by displaying an optional counter that uses the system font, updating Tile background images that you’ve provided, or displaying an optional Tile that uses the system font in a fixed size and color. Counter, background image, and Tile updates are controlled using the Tile Notification service. The accent color for the counter is always the accent color that the user has selected. Counter display is optional.