The new generation of Windows Phone, Lumias, has virtual buttons, as in Android. However, unlike the Google system, Microsoft allows the user to customize the navigation bar, which comes configured with dark background by default. In the system options, you can merge the bar color with the application background or leave it in the Windows Phone accent color.
Check out the tip below!
Step 1. Access the Windows Phone settings. For this, slide the home screen to the left and tap "Settings";
Step 2. Then tap on the "navigation bar". Finally, select the desired option - always black, merging with the app background color or use the highlight color system.
Ready! This way, you can customize the background color of your Windows Phone navigation buttons. The option, of course, is only available for devices that have virtual buttons.