The widespread use of synthetic dyes raises concerns regarding environmental impact and health issues , demanding natural and sustainable alternatives such as microbial pigments, which besides colour, provide other functional properties (antimicrobial activity, antioxidant properties, UV protection, among others). Likewise, the replacement of oil-derived synthetic polymers with natural alternatives is another promising opportunity for microorganisms employment. Nontoxic and biodegradable biopolymers such as Bacterial Cellulose  and Kefiran  can be easily produced, and besides, kefir is known for the probiotic, antibacterial, antifungal and antiviral properties. Therefore, the aim of this work is to produce new coloured materials from microbial pigments and exopolysaccharides, having microorganisms as unique source. This approach will open new avenues for the design of renewable, multifunctional and sustainable materials.