I have to agree with James on this one. Rattle can approach is not that consistent on such large surfaces. If you don't already have them, it is time to invest in Jerry MacNeish's books. In this case, his “THE DEFINITIVE 1969 CAMARO Z/28-SS396 FACT BOOK” has an appendix called "1967-1969 Correct Component Color and Plating Chart". At the first of that chart he does talk about his findings in rattle can paint, which are the best and how far off they are from factory.