I somehow feel that a milky white enamel dial and RG are match made in heaven. White Gold or Platinum, to me is a bit cold and does not let the enamel dial shine.
Perhaps if the markers and numerals were blue-painted and the minute-hand designed with thermal blued-steel, the Platinum or WG combo will be easy on the eye. The strap of course has to be indigo blue then.
On a side note, when I compare this with Jaeger lecoultre Nonantieme, the dragging hour there makes it look like a shabby cousin!!