Every time I see a box of highlighters and their NEON colors I am taken back to the 60's, and then again to the 80's.
In the 60's, when I was very young, neon colors and black lights were all the rage. One of the special effects that we had at our dance recitals were costumes with neon colors that glowed in the dark when they turned the stage lights down and the black lights on. It was very "psychedelic".
My uncle, who was more like an older brother to my siblings and I being only 9 years older than me, got married in the late 60's and the dresses that the girls in the wedding party wore were long, neon green with 1" white polka dots, short-sleeved, button down the front, and white Peter Pan collars. With white babies breath crowns for our hair. Fashionable for the time.
Then in the 80's, when my daughter was slightly younger than I was during the 60's there was a resurgence of these colors in the fashion world.
They say that history repeats itself.