Based on the basic principle of 3-d and colour display, some attempts to the colour display by density separation and three primary colourcomposition are introduced.
From the viewpoint of ecology, this paper argues that it is imperative to found a new theory of colourcomposition since the traditional one is insufficient in practice.
Through the analysis of the factors of colour dealing and designing in TV program making, the paper sets forth the point of view about the colourcomposition and design of TV picture appearance.