👉 In the context of computer graphics and computer-aided design (CAD), "colourableness" refers to the ability of a 2D or 3D model to appear realistic in terms of color and brightness. This quality is crucial for creating accurate and immersive visual experiences, such as in games, movies, or virtual environments. In other words, it's about how well a model appears to be rendered by the computer, considering its size, texture, lighting, and shading effects. It