If there's one thing Sony got right with its NXT line, it's that design-distinctive, transparent element. Problem is, aside from color matching with your photo collection, that incognito antenna doesn't do much -- well, not with the company's official blessing anyway. Users that take a quick trip to the Google Play store can download a third-party app dubbed, rather self-evidently, Illumination Bar Notification. And it does just what it claims to do, letting Xperia U users set myriad notification hues (P and S owners will have to make do with white only) and blinking speeds for texts and calls. It's free to download, so if you're looking to make that handset sit and look even prettier, you'd be well advised to hit up the source below.