it turns out a lot of my naming history has just come from me making random sounds until something sounds good. i'm one of them unrestricted internet access kids so i have a very long history of usernames but i'll just skip to the point where "neon" was actually involved
my first iteration of this was "neonriver". i chose to have neon initially because i was really into vaporwave at the time, and river was a name i went by in real life around my friends
then one day i decided to change my nickname on my switch for, as far as i remember, literally no reason (i guess i was bored????) and i did the old "making random sounds trick and decided "paintedneon" sounded nice! except that was one more than the 10 character limit, so i removed the e in painted to create "paintdneon". that name actually ended up sticking the longest, but there were a few problems with it, like people calling me "paint" even though i preferred neon, people not realizing paintd was misspelled, or on the opposite end, people thinking my name was pronounced "paint d neon"
so i eventually ended up changing it to just neonlights, which is what i'm still called in a few places. the screen part is really just tacked on because of my interest in tech (and also because "neonscreenlight" is much more likely to not be taken on a social media website than just "neonlights"