I think you've answered your own question. You'd have to see them together in the metal before you could decide as even photos won't show the correct shades. You'll be very lucky to find somebody on the site with all these items fitted but there may be somebody out there?? Some bikes with contrasting crash bars etc look really good. Personally I agree with you that three different shades of white will look shxt so I'd go for a stark contrast or Stainless Steel look. Years ago it was all chrome and take it or leave it.