I also didn't get thru at Longo but I don't believe they had in stock. I feel like many of those online Toyota parts stores are just sourcing as the orders come in...
Hopefully you're able to find!
The part numbers for the silver steelies are:
Wheels: 42601-AK011
Center Caps: 4260B-AK010
Let us know if you have any success finding them. I've spoken to a few parts places in the USA, they are on a backordered status with no timeline, and according to one dealer I spoke to in Canada...