if you want stealth, black is the way to go.

 

It would be a lot cheaper and easier to put painted mesh in your grille covering the intercooler than it would to change the intercooler's color. Probably better for it, too. It keeps you from taking any expensive rocks. The kind that puncture cores... Those are bad.

I don't know where you should look for anodizing services. I saw a DIY on it before, but have no idea where to look to find it again.