The term 'Highlighter Hues' refers to a range of bright and vibrant colors, often associated with NEON lighting. The crossword solution for this term is 'Neons', which is a shortened form of the word 'NEON'. NEON lighting is a type of gas-discharge lighting that produces a bright, glowing light in a variety of colors. These colors are often referred to as 'highlighter hues' due to their intense brightness and vibrancy.