One of the great new features of the iOS7 SDK is being able to match the status bar at the top of the device with your app, which gives the illusion of more real estate to the end user. With iOS7, it is recommended you take advantage of this new feature to have a neat iOS7 app.
On AppCoda, there’s currently a tutorial on how to set up the status bar, navigation bar, and the GUI objects to make a seamless interface. They also illustrate how to completely rid the user of the status bar altogether, which should be used sparingly but it is now at least an option.
The navigation bar in iOS7 has moved away from the glossy blue/black layout to a more 2D approach that matches the general aesthetic of iOS7 and eliminates effects and falls back on to normal color swaps to signify active buttons. No more gloss!
The tutorial runs through some of the parameters you can set in Xcode to get the desired results, and it’s very simple. They also show you how to make the status bar transparent so that other effects or patterns can be visible on it as well, and you’re not just married to a single color for its customization.