I'm seeing an increasing number of app icons switching to white background, e.g., eBay, Chase, CardStar and most recently, Dropbox. From what I can see, only seven of Apple's apps (out of 18?) actually have white background. While CardStar's new app icon is a welcome change from its previously colorful, cheesy design, Dropbox's icon change was unnecessary (solid blue to blue on white) as if developers are trying too hard to mimic Apple's new design. Please note that I'm not complaining about the new icons, just wondering if developers are given a set of instructions on how to design their app icons to be more iOS7-like?