About "materialic": Materiality. Reflector. Color. Surface.
Two aluminum foils are laminated on canvas (with a small distance between each other) and serve as a reflector for light (daylight as well as artificial light).
Transparent acrylic paint is applied over this, in different layer thicknesses, so that you have different color effects partially - depending on the reflection of the light - almost only aluminum foil is visible up to fully opaque acrylic paint, where the light cannot get through the thick, intensive layer of my paint.