Correct paint color for a 1970 Dart 8 3/4 axle assembly

Not sure if previously mentioned to the OP but a GOOD oven cleaner does real well in cleaning rear ends. I admit I have never lived in the rust belt, but I have restored countless Mopars and never had to blast a rear end to clean and paint one. Also a 3-4 in. wire cup on a right angle grinder will do a lot.