Merge "NIU Actions: Update background and dark mode colors" into sc-dev am: 3f45639b12 am: 790a623849

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15055430

Change-Id: Ie8429263ff510592514a33d11c732d6eebf394b3