Computer graphics colours are created by mixing the three primary colours red, green and blue. For this assignment, we will be using the normalised RGB model for computer colours. In this context, every colour is given by specifying three scalars $01,01$ and $01,$ where encodes the brightness of the red light, the brighness of the green light, and the brightness of the blue light used to mix your colour. We will be working with the colours turquoise, dark yellow, brown, dark blue, light blue and purple, obtained by mixing the primary following proportions of the primary colours: