The term 'Turning Red, Say' can be solved by the crossword solution 'Dyeing'. Dyeing is a process of adding color to a material or fabric. It is done by immersing the material in a dye bath, which contains a specific colorant. The colorant is usually a synthetic or natural pigment, and the dye bath is usually a solution of water and other chemicals. The material is then left in the dye bath for a certain amount of time, depending on the desired color intensity. After the material has been dyed, it is then washed and dried.