The term 'Change Colour Of' can be solved by the three letter word 'DYE'. Dyeing is a process of adding colour to a material, such as fabric or hair. It is usually done with a special type of DYE that is applied to the material and then set with heat or chemicals. The colour of the material can be changed completely or just slightly altered. Dyeing is a popular way to change the colour of clothing, hair, and other materials.