Merge "Change color rings color to system accent" into ub-launcher3-master am: 7e7c18bb am: 1efa83bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/11818395

Change-Id: I26c7a55f13bc96c443eeb1a28beb4bd151d638e9