Lucky shades (Fallout 3)

Lucky Shades are found on a manikin in a Scavenger shop South-west of Tenpenny Tower near the border of the world. It's a red building next to a bombed-out one with a parking lot. Manikin is straight back after you enter. The shop also has every item needed to make one of each custom item. However, the vendor doesn't sell everything he/she has in the store so you need to steal it.