Hey mate,
In terms of 'gearstick surround' I suppose this could be taken as meaning two different parts. The trim that is wood effect on all other models, on MV6s is silver (I actually have a set kicking around somewhere, already sprayed silver, which sadly has now picked up some storage scuffs /knocks etc due to lack of interest) and on your CDX this is wood effect, same as factory.
As for the other part, which is Mistral/Smoke in
my old your car which contains the ice mode and gear indicators - this is the part I was referring. All Omegas have this in the same colour, be it GLS, MV6 or Elite, it's a rubberised grey. This is rubberised at the factory, but wears and so many opt to rub off the remaining rubberised coating leaving an similarly-coloured plastic underneath, which looks fine. This is the part which is resprayed on your motor.
Hope you find one. I've got a fellow OOFer on my 'requests list' as soon as I find one I'm sending him it, but even on a 37k Omega in the scrapyard had a worn one, so no idea if you'll get one or not to be honest. Worth looking, though, of course.