Revert "Dont force black color"

This reverts commit c4f9e0cffc311fd76b42042826a7b4ad202866b4.
Frameworks: Material Black

Liquid Edit: Remove DarkKat branding no need to copyright everything

Change-Id: I9a4e28f892761506a8a11066dc1f1c0e3a241c30

Conflicts:
	core/res/res/drawable/ic_lock_reboot.xml
	core/res/res/values/liquid_symbols.xml
	policy/src/com/android/internal/policy/impl/GlobalActions.java
	services/core/java/com/android/server/power/ShutdownThread.java