It's inevitable: I get a shiny car bike or car or whatever, and within a week I'm seeing scratches in the paint. In this particular case, however, the bike is a Raleigh Venture with a steel frame, so I can't just curse at the scratches -- I need to cover them.

I've heard a few different suggestions on this topic. My LBS recommends nail polish. The Raleigh website recommends the enamel hobby paint used on plastic model airplanes. But since the Venture sports a dark metallic-blue paint job, I'm wondering if I might not have better luck matching the color with a shade of automobile touch-up paint.

What's good, and what isn't?