AOD: Use color filter to invert icons for AOD

Fixes an issue where the AOD icons where of different
brightness because they were converted to grayscale and
then inverted. Now we just set the appropriate color filter
instead.

Change-Id: Ic359aaee2e19274670f44c5b7380c636ee26e559
Test: Open AOD, observe that the icons are colored solid white (like the clock) instead of gray.
Fixes: 35850204