ummmm... here is a GM Photographic black and white Press Release photo of the early 69 Z28 ...
note the color of the front grille . . .
also note the narrow, early rear spoiler and lack of the ZL2 cowl induction hood. This same picture was airbrushed later to include the cowl hood . . . these "before and after" pictures were used in the 69 Camaro sales brochure too, and the "changes" were included in the many Revisions of the brochure:
Cover:
Z28 picture / section in the brochure (before the Cowl hood was added):
Z28 picture AFTER the cowl hood was added, plus after the rear stripes were changed (courtesy of CRG site:
http://www.camaro-untoldsecrets.com/articles/1969.htm):
