One of the current trends in computer science leads to the design of computing organizations based on the activity of a multitude of tiny cheap decentralized computing entities. Whether these chips are integrated into paintings or disseminated in open environments like dust, the fundamental problem lies in their cooperative operation so that global functions are obtained collectively. In this paper, we address the issue of the creation of visual ambiences based on the coordinated activity of computing entities. These entities are distributed randomly on a 2D canvas and can only change their own color and perceive their immediate neighbors.