Are you asking about where to buy fiber reactive dyes? Take a look at my page, "Sources for Dyeing Supplies Around the World". Unfortunately, the nearest dye supplier on the list is in Chile. I have been unable to find the name of a dye supplier in Colombia who sells small quantities of dyes, suitable for individual artists. 

However, there are several suppliers in the US who will ship their dyes to Colombia, such as Dharma Trading Company and PRO Chemical & Dye, both of which have very low prices for small jars of dye, compared to many other hobby dye retailers. See my Sources for Dyeing Supplies page for contact information for these and other dye retailers.