fb: follow on seekbars new UI guideline for 4.4

google forgot some things.....seekbar is one example

Change-Id: I996062a978322c93694e360dff1e4f42dc589062
Use white switch thumb activated drawables, not holo blu light.

* These changes swithes like wifi/bluetooth in settings to white.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>