How rare is a 69 Z/28 painted 63 63 ????
Having any 69 camaro painted 63 63 is rare. From the CRG estimates, .05% of 69 camaros were painted Champagne so if the color distributiuon was consistant for all production there could have been about 100 69 Z/28's painted Champagne. This is only a guess as the actual numbers are not known.
Just remember that rare does not mean the same as desirable!
Plenty of threads about it:
http://www.camaros.org/forum/index.php?topic=10274.0
http://www.camaros.org/forum/index.php?topic=8827.0
http://www.camaros.org/forum/index.php?topic=9887.0
Actually, I think it is a great color! It was a popular color in 67 GTOs, as well....