I really have been wanting to do this and it seems pretty easy to paint them in a day but im just not sure which color to paint them. I have a tannish/silver color 6. I was thinking about just going with black and have a good contrast to the tan color. Does this sound good?
Thanks

 

Black's a cool idea, maybe you could add a white "Mazda6" decal on top like Virgin1 did with his 3? Any colors but yellow (SCREAMS!) or red (played out) are fine.

 

As Vince said, yellow would probably not be a good choice for your car. And red is WAYYYY overplayed. But there are so many other choices.
You can go the Dupli-Color route the way I did originally, but you will be repainting them regularly.
It's expensive stuff and unless you're willing to divide it, you must use it all at once but I would recommend the G2 epoxy paint system. "Guaranteed" for the life of the car.
http://www.tirerack.com/brakes/acces...tail.jsp?ID=41



The results:


Thats what's left of 8-10 coats of hand brushed Dupli-Color applied over several years on the caliper. The spray is even worse and disintegrates quicker.

It only comes w/4oz. of paint so I split my kit into 2. You must also apply it in as cool an area as possible, below 70* or it hardens too fast, and WELL VENTILATED. It stinks, and is probably not very good for brain cells either. It's too hot here now to do my calipers, so I will wait, patiently, until fall for that.