Simon Schubert developed a new technique after his paper folds and graphite drawings.
Using felt as a tool, he rubs pigments into paper. The paper absorbs the fine particles through its open structure. The intensive rubbing creates an astonishing effect: some colours tilt into a different tonality. The phthalo-blue is perceived as purple, the indigo as aubergine tone. This phenomenon probably has its origin in the refraction and selective absorption of light so that the entire spectrum is no longer reflected.
The combination with graphite pigments creates an intangible, abstract spatiality, which creates an almost transcendent depth.
The titles of such as "Phthalogo" are a play on words of the pigments Simon Schubert uses in his works. This title, for example, is composed of the pigments "Phtalo" and "Indigo".