I'm convinced this topic is covered somewhere, but I've yet to find this exact question in the forums after looking through tons of posts. Just please direct me to the answer if I just didn't find the right post. Question:

I had a framebuilder move my brake braze-ons on an 83 trek 720 (to accept 700c wheels). All in all, pretty cheap and easy - except, perhaps, for the destroyed paint. I know it won't be as good as totally re-powder coating, but what is the best way to paint the 1" area destroyed by the heat?

Tons of threads also deal with actually physically removing or moving braze-ons, which I've already done, or painting an entire bike, which I'd like to avoid.

A lot of threads deal with covering up dings and scrapes, but I don't care about matching the color and it's a much bigger area. For dings and the like,
this thread suggests either nail polish, or Testor's model paint, or automotive pens - but I worry the area might be too large. Etching primer is also mentioned. Thoughts?