The term 'Apple Color Enhancer' is a job description for someone who uses ALAR, RED, and TINT to enhance the color of apples. ALAR is an acronym for Apples Low-Acidification and Ripening, which is a process used to reduce the acidity of apples and make them more ripe. RED is an abbreviation for Reducing Ethylene Damage, which is a method of preventing damage to apples caused by ethylene gas. Finally, TINT stands for Temperature Induced Natural Tinting, which is a process used to naturally TINT apples with a desired color.