Move the gray color option to front am: f355b44186 am: a0cffadd30

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/22631578

Change-Id: Ic647480bcd047bb4d1e9fb745f6e554d2b9c177c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>