Brazilian designers, Fernando and Humberto Campana brothers prefer naturals colors that are determined by the colors of the materials they choose to use for their projects. The types of materials include stuffed toys, scraps of leathers, ropes, floating tires and bamboo. The material surfaces such as bamboo provide a natural color that they can work with.
According to the brothers, natural colors, shades and materials can be as aesthetic as bold and shiny colors. Reflective materials, reds and variation of colors, like the flag colors of their native country, green and yellow have impact on their work. The combination of color palette, texture and material provide the harmony for their overall design.
( from the interview by Markus Frenzl)
source : chroma design architecture and art in color by Barbara Glasner and Petra Schmidt.