Well folks, there's really not much to this one...
I had 3 keys that I got confused because they looked pretty much identical. Soooo, I fixed it by painting each with a different color of nail polish, and then putting a layer of sparkle polish on the top, and finished off with a top coat.
With hindsight being 20-20 as it is, I do wish that I had sprayed them with something a bit more permanent than just a layer of top coat. I would suggest some hi-gloss lacquer like this one:
Available at Lowes (here), and probably all other similar stores.
Click here to get to my original Pinterest post of this and re-pin away!