De Stijl

Pieter Cornelis (Piet) Mondriaan, after 1912 Mondrian, (pronounced: Pete Moan-dree-on) (March 7, 1872–February 1, 1944) was a Dutch painter and an important contributor to the De Stijl art movement, which was founded by Theo van Doesburg. Despite being well-known, often-parodied, and even trivialized, Mondrian's paintings exhibit a complexity that belie their apparent simplicity. He is best known for his non-representational paintings (which he called compositions), consisting of rectangular forms of red, yellow, blue, or black, separated by thick, black, rectilinear lines. They are the result of a stylistic evolution that occurred over the course of nearly thirty years, and which continued beyond that point to the end of his life.
in http://en.wikipedia.org/wiki/Piet_Mondrian

...isso, ou como decorar uma parede branca sem gastar dinheiro.