Use color for face scanning animation that matches other UI elements on screen

On lockscreen, color of the animation matches the clock color
On shade/bouncer, color matches the color of other UI elements (a11y contrast compliant as well)
On biometric prompt or alternate bouncer with SFPS indicator, color matches the sfps indicator color.

Flag: EXEMPT bugfix
Test: verified manually,
 1. animation on lockscreen
 2. animation on locked shade (pull down to full QS shade)
 3. animation on alt bouncer on lockscreen with SFPS
 4. animation on biometric prompt with SFPS
Fixes: 414540877
Fixes: 374036233
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:41c0a596720b4a412a86836199451ee8b0557276)
Merged-In: Id6215a0d9b8a5111db070081a52bd09eefb8e5be
Change-Id: Id6215a0d9b8a5111db070081a52bd09eefb8e5be