Caution
:opinion bit on:
When I think "reidentifiy" I think "change type of conductor" (like like using white for an ungrounded conductor). If you are using other than green, gray or white as ungrounded conductors any additional tape is just informational, not reidentification. (like putting B O Y tape on a black 12ga wire to signify it is 480v)
I agree they do make MC cable in a wide variety of configurations/colors and if I was wiring a whole building I would get some but I don't think the code requires that I buy it if I am just hooking up a troffer on a 408/277 wye. AFC doesn't seem to be bragging about having violet/gray anyway. I would put violet tape on the hot tho.
