Paint for stencils for suitcases

I have some old TravelPro suitcases. Rectangular and black nylon. I want to cut some stencils and mark the front and back of each suitcase so I can find them on the luggage carousel. Any suggestions for what kind/brand of spray paint to use?

Right now I am thinking I’ll just put my callsign in Morse on them, but I’m open to suggestions.

Thanks!