Magnus Pettersen's experiments in tinted concrete furniture (which is, apparently, becoming a thing) have been fascinating us ever since the Norwegian designer unveiled a pitch-perfect debut collection with his partner Lea Hein at the Stockholm Furniture Fair last year (not to mention the beautiful, blocky, sculptural seat in hues of dusky blue and yellow Pettersen recently launched with Danish design brand New Works). But to delve even deeper into the possibilities of concrete as a raw material and color as an unpredictable intervention, Pettersen recently spent 60 days at a residency in Sao Paulo, Brazil, creating 10 new works in which the brutality of concrete is tempered by the application of organic, painterly swirls of color — in much more vibrant hues than Pettersen is typically known for.