SlimRecents: Custom background color, (1/2)

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/drawable-hdpi/recent_bg_dropshadow.9.png
	packages/SystemUI/res/drawable-mdpi/recent_bg_dropshadow.9.png
	packages/SystemUI/res/drawable-xhdpi/recent_bg_dropshadow.9.png
	packages/SystemUI/res/drawable-xxhdpi/recent_bg_dropshadow.9.png
	packages/SystemUI/src/com/android/systemui/slimrecent/RecentController.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Clean up