The term 'turns red, perhaps' can be solved by three crossword solutions: tints (5 letters), DYES (4 letters), and RIPENS (6 letters). Tints are a type of colorant that is used to add a hint of color to a material. DYES are a type of colorant that is used to permanently color a material. Ripening is the process of a fruit or vegetable becoming softer, sweeter, and more flavorful as it matures. In this context, ripening could refer to a fruit or vegetable turning red as it matures.