Colson suffered economic hardships in Paris and sales of his works were minimal. Following suggestions from Dominican writer
Pedro Henríquez Ureña and Mexican poet
Maples Arce, he left for Mexico in 1934 with hopes of improving his situation; there, Colson held a personal exhibition, sponsored by the Secretary of Education and began teaching at the Workers' School of Art. During this period, Colson also devoted himself to illustration, such as in the book
Eco by the poet and friend
Elías Nandino, published in 1934, whose black and white surrealistic illustrations of male torsos and genitalia, bleeding wounds and mutilated organs were celebrated at the time. In Mexico, Colson befriended
María Izquierdo,
José Gorostiza,
Antonin Artaud,
Wifredo Lam and his Cuban student, Mario Carreño. In 1938, Colson left Mexico, traveling to Havana, Cuba, accompanied by
Mario Carreño. He lived and taught there for a few months, and held an art exhibition, before shortly returning to his native country after twenty years of absence. On May 26, 1938, Colson arrived in Santo Domingo and held his first exhibition in the country at the Dominican Athenaeum The next year in Paris he exhibited at the prestigious
Berheim-Jeune Gallery ten paintings and drawings, with artists Mario Carreño and Max Jiménez. However, as a result of
World War II, Colson relocated to Barcelona. There, he completed numerous works including a set of murals on the island of
Mallorca. In 1950, Colson returned to Dominican Republic and became director of the National School of Fine Arts. However, in 1952 he resigned from his post without having served two years in office. Following his resignation, Colson illustrated the Dominican author Tomás Hernández Franco’s book
Cibao, with drawings portraying the daily life of
cibaeños. He also made a well-known portrait of him there. In 1957 he traveled to
Caracas,
Venezuela, to hold an exhibition. Colson had already presented his work in Venezuela at the Valencia International Painting Exhibition, which was held in commemoration of the 400th anniversary of its founding. On this occasion he had brought a multitude of works to be shown at the Museum of Fine Arts in Caracas, however, after the interviews in the press announcing the exhibition, the general director of Fine Arts did not approve Colson’s works. ==Style==