Turn default gradient into solid black

Test: visual
Bug: 66957450
Change-Id: I6a34a35912e4dd4594565f88636ce89689d26f2f
(cherry picked from commit e7476addecb4fec6abd08cfb7aa27c473ce5c1f0)
(cherry picked from commit 12dad0c4fc5fc8f0988dca0fffd2d26f2cb04195)
1 file changed