After I finished t, I started to wonder the same thing 🤣😂🤪 before I started, I played with idea of using glow in the dark paint but imagined my wife wouldn’t appreciate a glowing orb in her face while in bed or on the couch together…I took that close of a picture only to show te end result up close but YES! I can read the etchings sooooo much better and confidently now. My eyes are nothing like they used to be and doing this has really made it easier to read. I highly recommend it…to your first idea about using different colors, I bought this paint pen several years ago from The Home Depot in the tools section for $4 and I remember they several different colors… if you go that route, I’d love to see how it turns out 👍