Call me old fashioned here, but you'd think MMC would double pipe the front section of the exhaust...or powder coat them..to avoid the bluing, yes? Such easy and obvious solutions. Or at the very least, offer these as extra cost options.
The side pipes do not blue and look dandy in chrome, it's only the front section, and the idea of sacrificing the chrome side pieces to spare the front pieces doesn't sound like a good trade, at least with the dark body colours where the chrome really stands out.