Any suggestions....

on how to make a headlight bucket look like this one?

View attachment americansuspensionblackvelvet.jpg

Have spent some time searching and have not found a bucket similar to this one. Was at a bike gathering a while back and there was a guy that went after his chrome exhaust with steel wool and got a similar look. Wondering if that was what was done here? If that is what was done can;t help but wonder how it will hold up?