I have the orginal punched warranty sheet, but don't recall if there is any mention of the two tone. The watch is at my office now and I cannot check it but will do so tomorrow and post the results, along with some pics.
If there is no mention on the paperwork, would it be possible to have Rolex verify it was shipped that way? Do you know if they keep such records? Can an expert tell the difference between a factory item and an aftermarket conversion?