The term Fabric Colourer can be summarized as a Dyer, which is a four letter job title. A Dyer is someone who adds colour to fabrics, either through the use of dyes or pigments. They are responsible for selecting the right colours and materials to create the desired effect. They also need to be knowledgeable about the various types of fabrics and how they react to different dyes and pigments. Additionally, they must be able to mix the right combination of dyes and pigments to achieve the desired colour.