Born in Port-au-Prince, Colimon began her writing career as a playwright and published five plays between 1949 and 1960.
She also wrote essays, short stories, and children's literature.
Colimon's keen observations of the Haitian people's struggle against poverty gave a particular poignancy to her work, as demonstrated by Fils de Misère.
In Les Chants des sirenes, her collection of short stories, she explored the painful impact of the Haitian diaspora on both the individuals in exile and the Haitian community.
She was one of the initial members of the Feminine League for Social Action.