I have only had to get a replacement parts from Revell one time so it's hard to say what is normal. I used their on line request and provided the codes from the kit box and the part number, explained the problem on the provided comment box. Within 72 hours I had an E-mail conformation and the new body arrived within a week. So for my personal experience this one time I was very happy with their response. One thing I either read here or else where was that these parts are removed from old stock in the where house that was set aside a long ago. In my mind that would require a great deal of time in some cases looking thru cannibalized kits looking for parts. So depending on the replacement parts requests the turnaround time would be different at different times.
You are right about this color. It has enough flake in it to look like a "Bass Boat". I have used it several times and really like it. If you are still looking for an Orange color for you're other project and want something just a little less "in you face" you might look at Tamiya TS-92 Mt. Orange. Just a little more subdued but just as eye catching.