What color is the slant 6

I've got a 67 Dart GT with a 225...The engine bay looks to be original and untouched, but the motor itself is blue.
It's an A/C car...and I know with some of the BB B Bodies A/C engines were painted blue and non A/C orange. Does anybody know if the same holds true for the Slants?

My '72 with the 225 was originally the turquoise color and it's a non A/C car, but at that point they may have stopped using other engine colors. And when I had the motor rebuilt, I repainted the engine Duplicolor Chrysler Corp. Blue which I got from O'Reillys.