craftgrrl | Question about sterling silver & acrylic paint.

I'm in the process of finishing up a ring in sterling silver (did the piece in wax and got took it to a metal caster). There is a hole I wanted to fill red acrylic paint with but was wondering if anyone knows how the paint will react to the metal: if it will adhere normally and dry in a normal amount of time. I would show you the ring but I don't have a digital camera here or a scanner--I can't seem to find any information on this online so you're (one of my) only hope(s)! (Generally because I don't know if anyone else would have a clue.)

Thank you kindly.