officially it was "corporate blue" think Chrysler/Plymouth signs & they do exist
(I'm sure RP running a Ford in NASCAR for '69 lessened their numbers)
..... there are a few F3 Road Runners out there, too scope

1969 Corporate blue.jpg1969  99 pettyblue RR.jpg1969 F3 440-6bbl RR.jpgSan Leandro Chrysler Plymouth.jpg