The paint I bought and it was specifically for calipers cost me $50 - like AZN mentioned.
It's called
"FOLIA TEC CARSTYLING BRAKE CALIPERLACQUERSET" - it's a German product.
Comes in Red,Speedyellow,Racingblue,Silver,Black and gold.
And Azn was right, just use it on the calipers and nothing more - If you use it somewhere other than the calipers, you might have a problem taking off the wheel or the assembly - don't know from experience, but that's what it mentioned in the instructions
.