Well, I steel wooled the barrel today with some oil. It was rust and not factory preservative. It's still there but not as noticeable. It's not big enough of a deal to send back to Colt. I ordered some of the Corrosion X and will apply that when I get it. It looks good enough now that most people wouldn't notice it unless I pointed it out. Thanks to everyone for the help.
"I know this is personal. That's how you'll fail. No speeches. No talking. You point the gun. You shoot the gun."