Sorry, I've just confused you. I meant the black weathering between the grooves didn't do it for me. You will need a base coat most likely. I use alclad myself, it needs a gloss black base to work best, although white works also. Haven't used Testors so I couldn't say what to use. AK interactive have just released a new line of xtreme metal colours, including polished chrome, they look quite nice, dry quickly and can even be used without a base coat although I wouldn't recommend it. You'll need to clean up the blobby factory applied paint for best results whatever you use I'm sure.