That looks very authentic, thanks for the pic. The color I need is for a pair of exhaust pipes on a Gloster Gladiator. In my mind this would look comparable to what you've done with heat effect, discoloring and possible moisture markings.

I had a bottle of this although discovered it was pretty glossy, too much for my purpose. I tried it on the prop tips and it didn't fit the rest of the plane. I'm going to redo these also once I get something either mixed up or purchased.