I wouldn't be at all surprised if some very proud owner of a CT-100 in the 50s, added a "color" badge. Think about how many people with turbocharged cars add a "TURBO" badge that doesn't belong there... Or this CT-100 (if really a CT-100), was in some sort of a display and was labeled.
The only reason that nobody in the posts above has said they called, is because they're all going to
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Charles