InCallUI: Add transparency to Glowpad background [1/3]

this adds transparency to the glowpad view background so the incoming caller's entire picture can be seen.
PS8:making it a preference.

PS16: Permissions

Change-Id: I33bfdc6ed641770a4e0ceb7841e0908581256757
Incallui: Change some colors

Signed-off-by: anerikg <anerikgames@gmail.com>