black mark on shell

[atmosphereart]

hi, im sure this has probably been asked a million times but is there anyway to touch up a black mark thats on my macbookpro. it doesnt look like a scratch...more the aluminium finish has rubbed off or been scratched slightly.
its driving me nuts but i guess there are bigger things to worry about. just wondering if there is a solution?

cheers folks

 

[StEvEnGtR]

I found this http://www.welovemacs.com/tiscrconclr.html, but I don't know if it does a good job or anything