What paint to use to paint CF numbers on vessels?

Seems to me painting is the least expensive and most versatile, since I have quite a few to do.  I imagine this job requires pretty strong paint to take the abrasion.

Any recommendation?

Thick Permanent Marker might work?

Thick Permanent Marker might work?

Yeah I think that will work too.  I just think painting will look better.  I plan to cut letter molds so they will look very uniform.