The jumpsuit is colored red and provides +5 to Small Guns. Red's bandana is a red colored variant of the normal bandana and rarely ever seems to take any damage due to the small area of body it covers.
Both items can easily be taken while giving her a weapon during the Big Trouble in Big Town quest. They can also be obtained by reverse-pickpocketing, or by taking them during Strictly Business, when the player asks to see her inventory.
When you offer her a weapon during Big Trouble in Big Town, you can see her inventory and take her jumpsuit, bandana, and eyeglasses without losing Karma.