Erm... Robert, it was your idea, not mine. I was just remembering how I used reflective tape on my guylines and always getting frustrated with the tape getting in the way when trying to adjust the guylines. Your idea puts the tape in a more logical place, plus solves the problem of losing stakes in the dark. I can't tell you how often that has happened. And who wants to lose expensive titanium stakes?
Glow-in-the-dark and reflective stakes would also, it seems to me, help you locate your shelter in the dark, too. Some people might mistake it for fairy-rings or mysterious messages from aliens!