Change "No recent apps" color to white instead of holo blue to follow new UI colors.

Thanks @rascarlo

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
change-Id: Ied4730e321021445baf1191e167d645f39f4c92f
Merge "Change "No recent apps" color to white instead of holo blue to follow new UI colors." into kitkat