Unattributed image retrieved from Travel and Trains.
That appears to be the Blue set, which is already being tested in Florida. As all trains are running on the same track, the color coding provides no additional cues as to destination (e.g. the red cars go to Harvard and the green cars go to Fenway Park). Perhaps the operators will in future notice the coloration of Seaboard Air Line's old Orange Blossom Special diesels, where it would be easy enough to work the pink in with the green, blue, and orange on the units as delivered. It's probably too much to ask for power cars that look more like those diesels.