What color should I paint my engine?

Wow! Lots of replies here! Thanks for all the feedback. All these nice engines are making me start to feel bad, though. This job started out to be a quick, low budget deal to get the car going again, but it's starting to escalate out of hand. I would like to do something really nice and custom but I don't plan to keep the car too long so I'm not going to devote a huge amount of time and $ to it. I have pretty much decided to go with orange since it isn't a resto. I think it goes better with lime than red does. The engine I pulled out was black and I didn't really care for the way it looked. I would like black if I had some chrome or aluminum accessories to go on it but I don't have anything laying around for a small block.
I'll try to remember to shoot and post a pic when I'm done.
Dallas