Its a plating thing Peter. When I buy gold plated kits , I like my gold to be gold. I find them easier to sell that way. I also like the gold to stay gold until after my customers cease to care. I don't like my gold to not be gold at all, just look like gold, which is what you get with the highly misleading plating called titanium gold, for which you should read gold coloured titanium. Tough as old boots and cheaper than the real thing, but not actually gold apart from an infintesimally thin layer on top which wears off a few moments after the cheque is banked.
