Orange air cleaner color

I checked around and was told any 1972 car with a 340 came with the orange air cleaner (trap door type) and what I said before about the early 73 340 cars had it to ( till the left over 1972 where used up)
1974 360 4-Barrel and 1974 440 4-Barrel - single long snorkel for B-bodies (trap door).