Posted in commuting, I figure commuters might be likely to know about this.

I bought the Mrs. a road bike, but she doesn't like it, only because of oil stains from the ring on her leg. I tried cleaning the ring, using clear lubricant and explaining that it is a badge of honor for road bikers. I even found a photo online of some guy who tattooed a ring stain on his leg. All to no avail.

So wondering there is a chain-guard (or correct term?) that I could put over the big ring to minimize the contact. It's SRAM Apex compact, I believe, 50/34. I've seen the plastic guards for cruiser bikes and mountain but nothing for this setup.
Maybe the guy with tattoo is on this forum?

Suggestions very welcome.