Update wallet screen to use MaterialNext colors.

before:
https://screenshot.googleplex.com/3Ge4KeLTvoogMgg,
https://screenshot.googleplex.com/55QxcAdLxkFMNtU.
after:
https://drive.google.com/file/d/1THwgmDV9KoXkRJ0tkXb-8k7yH2OqXDRF/view?usp=sharing&resourcekey=0-PuUzeCxpb7PMRijUvKL5FQ

Test: manual
Fix: 187727600
Change-Id: I1d14b5faa56ba7965c7d791a3d4ddaecd6b59dc6