Remarkable - in iOS 7 UI Transition Guide

1. Because UIWindow inherits from UIView, you can specify a tint color for the entire app by setting the window’s tint property using code like this:

window.tintColor = [UIColor purpleColor];

2.Dynamic Type Font

 use the UIFont method preferredFontForTextStyle to get a font, instead of specifying font names or sizes.

3. Imbedded Picker in table row