Those wheels on your link look very cool, and that colour should suit a black or storm blue celica really well.
My refurb is for my winter set; old 5 spoke celica 16" ...probably get some Goodyear Vectors too.
The 'Gunmetal' term maybe misleading on the eBay description, it says 'ANTHRACITE TECNIK GREY' on the lids, which will be perfect if it comes out like the lid colour, and go with the Chrystal Silver metallic paint nicely, and being a darker than standard 16" finish it should help hide the winter road grime better.
Yesterday i spend a couple of hours rubbing down the corroded finish on one wheel [the worst one] before thinking "this is a right game of soldiers"
...so come Monday they're off to the local shot blaster get the job done,
over-wise i'll be spending all winter trying to get them ready
Debs