[Settings] Migrate color roles to respect color contrast

This change updated color roles in the main Settings page and in the
alert dialogs.

Bug: 335668262
Bug: 335668306
Bug: 335711196
Bug: 335711422
Bug: 335713067
Bug: 335712185
Bug: 335713398
Bug: 335714079
Bug: 335713405
Bug: 335714437
Test: local raven device

Change-Id: I29895ecb869f1053bbcc55ebeb42020e7ce77b8b