Silver Paint For My Not-So-Sterling-Silver-Ring-Af…

My boyfriend bought me the most gorgeous ring that i saw and wanted so badly. It was just a cheap ring that was suppose to be Sterling Silver & Cubic Zirconium. The Ring has the imprints on the inside that shows its suppose to be Sterling Silver .925 but either way it started to turn my finger green and the lady i bought it from told me I must have an acidic body chemistry, that the green finger is an allergic reaction to something the body doesnt like, and that the reaction will eat away at the Rhodmium finish. The green finger isn't a problem because i just coat it with clear nail polish. But i love the silver color and its wearing away. I absolutely love this ring and could care less if it is a fake(im sure) but i just have a problem with the silver wearing off. Is their a silver metallic paint that i could buy that would replicate that exact silver color? I feel like this is a dumb question because I could easily find out from a hobbie store im sure but i thought is ask anyway. Thx