Keep the blue, it was definitely worth it IMO. If not, contact your dealer immediately. They'll probably have to contact the regional rep who will have to submit the changes. The factory will then have to accept the changes. It's the same process I went through in about the same timeframe to add the front camera. The factory did accept the changes but the truck still showed up without the camera.
I think I had the dealer submit the changes on a Thursday. My truck was scheduled to be built the following Tuesday. The factory sent back notification that the changes had been accepted on the Monday before it was supposed to be built.
