Add tiles color options (1/2)

Credit to Slim

Change-Id: I80d26579fe31926b8fa9078e621e1545019b60df

Conflicts:

	core/java/android/provider/Settings.java
	packages/SystemUI/res/drawable/qs_tile_background.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java