Camaleonda, the sofa system designed in 1970 by Mario Bellini. This modular sofa has defined the aesthetics of an entire era of interior design, thanks to its great success both in terms of the public and critics. 2 Camaleonda, the sofa system designed in 1970 by Mario Bellini. This modular sofa has defined the aesthetics of an entire era of interior design, thanks to its great success both in terms of the public and critics.