Thanks for all the feedback. It's strange that in most manufacturers' sites tires have white lettering but most fitters/suppliers they never ask whether you want white lettering - certainly in the UK. Certainly, having a look around a supermarket car park with it's many flash and 4x4 cars you will very seldom see white lettering. It used to be very common in the 70s 80s when customizing was that little bit more influenced by American culture but now Japanese customizing more influential. For the time being I'm leaving the white lettering but I may do it in summer and if I really don't like it I will get a fitter to turn them on the wheels (black letters outward)