BMW now offers the break caliper housing in Tornado RED! as a replacement option to the stock black on the 2008-2012 M3. I have worked out a deal with getbmwparts.com to get them shipped here from Germany. The cost is $264.61/caliper housing for the rear and the fronts for $311.22/housing.
The BMW part numbers are:
Brake caliper housing, front left TORNADOROT 34117845133
Brake caliper housing, front right TORNADOROT 34117845134
Brake caliper housing, rear right TORNADOROT 34217845138
Brake caliper housing, rear left TORNADOROT 34217845137
Please note these are NOT powdercoated or painted these are manufactured directly by BMW. They are the exact same caliper housing that we all have on our M3's now, they are just solid red through the entire component which means the color will never chip or burn off!. Please PM me if you are interested. IF we get a group of 5 orders together they will ship to us for free. Please PM me if you are interested.