QS: set default colors when custom press and background colors are enabled

if custom press/background colors are enabled, the default press color wasn't
set the color was defaulting to white which doesn't match the settings value.

Change-Id: I65dab6fd5a17106b7b6f2889f32f4b4b10d6e74b
Merge "QS: set default colors when custom press and background colors are enabled" into kk44