Update view colors on onOverlayChanged()

We were re-inflating some views, but not updating the colors everywhere
we needed. The Shelf, for example, had wrong background colors during
transitions because mNormalColor of notifications above it were kept
untouched.

Test: visual
Fixes: 178804239
Change-Id: Ieae0ceed99fd9c00b570a40438ce8313e481e3a4