Definition & Meaning of "highlighter kid"in English

What is the origin and meaning of the phrase "highlighter kid"?

The slang term highlighter kid is used to describe someone, often a child or young teen, who wears bright, neon-colored clothing that stands out vividly, much like the fluorescent ink of a highlighter pen. The term is often applied playfully or teasingly to kids dressed in neon athletic gear, rave-inspired outfits, or other bold, eye-catching styles. It emerged in the 2000s and 2010s in school and youth culture, where such clothing was both a fashion statement and a way to be easily noticed in a crowd. While sometimes used affectionately to point out a fun, vibrant personality, it can also carry a mildly mocking tone when referring to someone whose style is considered loud or over the top.