Season 2 Ep.8. Patsy brings Bray a cup of coffee. Being a "slave" to everyone is starting to get to her. As she leaves Bray's room she bumps into KC - literally. In just a few steps she has acquired a new hair style with lilac extensions and orange earrings + dark lipstick.
Patsy's new style lasts 40 seconds - for this scene only. We next see her ladling out Antidote, and she's back to how she was when serving Bray coffee.