I have tried two different approaches to this. First I had my bike custom painted. It didnt cost too much because I only painted below the pin stripe on my 06 TD. The bike came stock as white pearl, and I painted below the pin stripe to include the air box covers a dark midnight blue pearl. It does two things in my opinion; first it gives the bike a look that nobody else has, (couples with my Steve Kafka hand laid pinstriping), as well as forces your eye to look past the lower cowling and the air boxes due to the fact that they are a solid dark color. I have removed all of the stock reflectors in the front and chose not to highlight the radiator with chrome. This brought out the front end of the bike when not running the windshield and made it very strong and square looking. I am also polishing all of the front end aluminimum to a high shine.
I say all of that to lead to this. there is a company called, M&M metalizing. They are out of Westminster California and can be found on Google. They have the ability to chrome plastic. I have sent them the entire air box assembly to include the housing and for just over three hundred, both air boxes will be returned to my house in a week nice and chrome.