I think silver sparkle is a bit to metallicy (is that even a word!?) From memory the gear surround and dash dont have much flake in them.
I used an Audi silver that I had in my garage and it was a pretty good match on the heater controls.
Some folks use Peugeot Platinum Silver,....can get from Halfrauds. Never tried that shade myself, so cann't tell you if a good match..