Electrochromic Paint

Paint that can light up and change color when a current is applied to it.
Electrochromic Paint is a specialized paint that lights up in a color similar to glow-in-the-dark paint when an electrical current is applied. One of the main providers of the electric paint is Lumilor.
There are some restrictions about the amount of surface area (not much larger than 280 square inches for a single lightup sector) that can be lit up with this kind of paint, but for the right application it can be a great fit. Additionally, it doesn't have an infinite lifespan, or its brightness tends to fade over time, so it's not particularly suited for permanent installations.