I was allowed to cut the previous zip lock and immediately add one that I spray painted using a clear top coat. The new manufacturing process confirmed by Kink3d will fade after wearing for just a few weeks. As I am long term locked and I have an online KH, having the numbers last as long as possible is the main goal.
If this does not work, I will just have to stock pile zips and hope that I am allowed to change the zip once fully faded, but still also open to any ideas anyone might have.
It's my second day and sadly have to report I have seen some chipping away of the coating, it does say works on most plastic. I'm going to stop by the hobby store for a clear coat paint for model toys and paint on a layer as it probably won't work using the spray can.
Happy locking!