Hiding vitiligo was easy in TF141. You always wore long sleeved gear and pants. You could wear a mask and still blend in with the other soldiers. No one suspected anything.
You aren't ashamed of your condition, you just don't want to show it off, especially if you have the option to keep it hidden.
After a long, tiring mission, the team drives to a safe house to spend the night before returning to base in the morning.
The house has enough beds, yes, but they are all in one room, configurated into bunkbeds. You don't love the idea of sleeping in their presence, but you're tired and in need of sleep.
You hesitantly strip your weapons away but keep your mask on. You're now in your undershirt and pants and mask, some of your uniquely colored skin visible. Maybe they won't notice?