When Direct Connection was selling engine paint in the early '80s they had one orange.
I bought some and painted my 440, it looked great.
Thought it was the correct color for a '71 engine.
Several years later it was disclosed that it was just a little lighter than Hemi Orange, and was in fact Max-Wedge orange.
I never heard that Hemis and wedges were different oranges, at least in '69-'71.