Witek works almost exclusively with the colour black. She uses materials such as graphite and oil stick to explore the physical properties of this single pigment. Her technique involves repetitive marks and dense applications. In the "Bunker Series", she creates heavy forms that suggest weight. The surface of her drawings has a tactile quality. This approach allows her to find variety within a restricted palette.

The minimalist nature of her work suits contemporary interiors. Her drawings provide a sense of order. Collectors often choose prints like "Atlantic Side XII" or "Split" for their clean lines and monochromatic depth. These pieces do not demand attention through bright colours. They offer a calm presence. The focus on texture and geometry makes her art a sophisticated choice for modern homes.