We first met São Paulo, Brazil based artist Celso Mazo, aka Mazu Prozak, or simply "Prozak", while exploring the streets of Wynwood in Miami earlier this month. The Brazilian graffiti painter was still working on his mural in the Smashed Canvas art block, but it grabbed our attention because his didn't look like the rest. From a distance, his piece emulated the soft and organic effect of ink or watercolor, rather than those of his neighbors who were using acrylic spray paint and stencils. Using layers of cartoony bubbles, other times light washes, Prozak's murals play with color relationships that he relates to human emotions.