That's the thing folks...my engine is blue, non A/C car!!! It had been painted orange after a rebuild in the early 80's according to the original owner (I'm second owner) and he was quite upset by that. He bought the car as a dealership demo from the dealership he worked at for over 30 years. The engine was blue.
When I had the engine rebuilt earlier this year, there is evidence on places like the the spacer on the alternator, on the water/frost plugs on the block, on the rear on the block where the tranny bolts on to it, on the valve covers, of the original blue paint.
Like the Who said, "I can't explain!!"