After visiting Barragán's house-studio, Colomer proposes to reinterpret the "Interaction of Color" exercises freely, this time outside the classrooms, in the context of the street. For this, he stocked with colored construction paper found in the store closest to his house, with a unique chromatic repertoire popularly used in Mexico for signs, advertisements, or decoration. The new exercises were improvised during walks in which pieces of paper were placed against colored walls. In the photographs, captured by auto-timer, the presence of the artist participating in the process records the will to silently integrate into the city, fantasizing about an occupation, an unavoidable task, a work syndrome. These images, which make up the Standard MEX (2019) series, show a chain of random encounters that contaminate the abstract, purely optical exercises, with doses of urban reality. It is also a proposal for a color chart that investigates a certain stereotype of "the Mexican".