glow custom Galaxy S4 Case effect, as do

Android Design lays out the way buttons should work in various Samsung S4 Case states, and how that can convey what the system is doing. Developers can rely on these active and nonactive states within their apps because of the inclusion of the stock Holo theme. More complex activities, like swiping apps or tabs away, should also be enhanced with visual cues. Google uses the multitasking interface as an example of this. When an app is being swiped away, it fades into the background, letting you know it is going to be removed. This is the kind of user interaction Google wants to see more of.
In Android 2.3, Google began using the colored spark at then end of a list to indicate you are indeed at the end. This is a useful bit of visual feedback, but it's not used in all thirdparty apps. The Android home screen uses the boundary glow custom Galaxy S4 Case effect, as do all the scrollable lists and widgets. Hopefully, developers will get the message and make use of this cue in more apps.
Authentically AndroidGoogle is finally talking about a "pure Android" experience. As anyone that has poked around NFL iphone 5 Case in the Android Market can tell you, there are plenty of apps ported from other platforms. They can also tell you that often developers have ported the old interface right along with the content of an app. Not only does this speak to the fractured nature of Android UI design in the past, but it's often a usability disaster.

http://www.flixya.com/blog/5516922/NFL-iphone-5-Case-Dads-and-grads-time

http://bloxster.net/?p=4321&preview=true