Guess what, I like bright flitter (which is what mine are), whish is a light anthracite/bronze. it's different to the WR1 wheel which is more grey.
It's a better match to the champagne mettallic in the royal silver.
yours is the a more silver (Code 406), so plain silver will work, although with the darker silver you can be quite lazy with the wheel cleaning.
Gold is OK, but I swapped some ST2 17's in silver to the same wheel in gold and I didn't like it on a silver car.
Gold does work well on a scoob but I think silver bodywork is the least best mix....although saying that WR1 Blue would look
even worse with Gold Alloys......
Be careful though with some of the Prodrive PFF7 copies as some of the anthracite ones are very dark and a matt finish, which personally I don't like.