Why not try some translucent nail polish in a bright color, but one you can still see through? I use it on my tools (hammers, tape measure, level) and the guys wouldn't touch anything with a bright pink L.A.W. (my initials!) on it!!
If it starts to wear or chip, just add another coat. Has done me right for years in Construction...would hope the ladies at the guild are a kinder, gentler crew! :)