What color should I paint my engine?

I'm changing the engine in my '68 Dart GT and am thinking I might as well paint it while it's out. Car has been painted '70 Lime green and the engine looks to be Chevy orange. I know '68 v-8s were originally red so should I paint it red or go with something that would look better in the lime green engine bay? Keep it orange, paint it sassy grass or JD green, black? I plan to paint the mounts, brackets, and accessories black. Feedback please.
TIA,
Dallas