Correct Engine Color

I looked at all the charts for the 340 engine colors.
However, I am the original owner of a 1971 340 Duster.
Built April 1971. Engine came BLUE.

In Spring 1971 340 engine went from Street Hemi Orange to Industrial Blue (light)

That happened when 340 assembly changed from Windsor “GW340” to “Mound Rd” “GM340”