Concretissyma Matiz arose from a project of colouring concrete, an idea of the architect Ruy Ohtake - who also does this with mastery in his works. The new tones which vary in intensity as per the reaction of the cement, lime and oxygen of the water during the cure of the concrete have all the subtlety of an artistic work. They are pieces where the colour is in the extent to give personality, but does not obscure any proposal of the project.