How quickly does bronzing occur?

[quietguy_imp]

I am diligently looking for a CB to call my own. I see that bikes with even 300 miles on them have bronzed headers, so it seem to occur pretty quickly. Some bikes with several hundred or a few thousand miles have dark speckles in the bronzing and some seem uniformly bronzed. Do the speckles suggest that the bike was mistreated? Thanks.

Mine began to "bronze" within the first 40 miles... Now at 400 miles on the clock, it's a uniform bronze color but not "speckled" or blued.

The Deluxe model has the double walled headers so all that's hidden. But converting a standard to the Deluxe 4 into 2 is a pretty pricey deal.