Merge "Update default user icon colors." into tm-dev am: 78c0c44c am: bb4f2172 am: d438de5a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17607300



Change-Id: Ib66c1220a16ba91e7e746d410bffde4009b51270
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>