This study shows the exploration and partial results of the use of ancestral and identity fiber dyeing techniques as current and sustainable processes to dye cellulosic textile materials such as fique and cotton. For this purpose, elder fruits, turmeric and achiote (annatto) were used, with which the natural dyes were achieved, and different tones were developed through the use of different mordants such as alum or aluminum sulfate, ash solution, urea and others. The application was made in the laboratory in small samples of fique and organic cotton fibers, and then it was done in larger quantities with a group of artisan weavers in Charalá (municipality of Santander, Colombia), sharing knowledge between the parties. The study shows how dyeing with natural dyes with a simple technique from the artisans of the territory can be considered as a sustainable alternative, respectful of culture and the environment.