I don't know if I really don't understand this or there is a confusion in the title. The shiny-metal-ness is from an already shiny metal that is forming the drop, right? The interesting thing is perhaps the fact it is golden as the water interacts with the surface, but frankly that looks very similar to other thin-film surface interactions, some of which are due to oxidisation in other reactions. Now, that this isn't the normal O2 reaction is interesting, and that there isn't a violent H2O oxidation process that normally occurs is interesting, but it just feels like 'Look! Water is shiny and metal now' is a bit ... misleading?