I personally prefer subtlety. This is a message that is hiding in plain sight, which appeals to me. The gaudy LED or glow-in-the-dark fret markers and inlays that many electric guitars are now sporting do nothing positive for me. And I'll only put sequins on a guitar when Taylor Swift pays me $10K to do so.
I have written messages on the underside of the soundboard. You can only read this with an inspection mirror. Again hidden away.