[SB][Chips] Update color tokens for accent-themed chips.

This update uses a slightly different accent color and also uses a color
that will stay the same between light & dark mode.

Bug: 394610705
Flag: EXEMPT refactor
Test: trigger phone call chip -> verify new color (see screenshots
inbug). Test with ChipsModernization both on & off, and
StatusBarNotifChips both on & off

Change-Id: Ic009aedcdfa259091a35cc1317303d97114989f6