Can you paint your key with nail polish?
If you mean the top part that does not go in the lock, yes you can. I knew someone who color coded her keys that way.
I'm not sure but don't.
Yes, but It might fade/chip after a while.
Yes, I've coded my keys that way but I just put a dab of different polish at the top of key.
Yeah lol you just reminded me of Zoey 101 because wasn't her door room key decorated? And yeah you can paint your keys...