The term 'change a shade' can be answered by two crossword solutions: DYE and RECOLOR. Dyeing is the process of adding color to a material, usually fabric, by soaking it in a colored liquid. This is a common practice in the textile industry, and is used to create a variety of colors and patterns. Recoloring is a similar process, but instead of using a colored liquid, it involves changing the existing color of a material by applying a new color over it. Both processes are used to alter the appearance of fabrics and other materials.