Günter Fruhtrunk
Günter Fruhtrunk, Offenes Grün (Open Green), 1969, acrylic and casein on canvas, 106 1⁄4 × 77 1⁄8″. The works of Munich-born painter Günter Fruhtrunk embody what Theo van Doesburg called for in his “Concrete Art Manifesto” in 1930: They are “exact,” “anti- …