Yes, this gentleman put the Euro caps on his:
As you can see the Euro caps come painted silver to match the silver wheels they have. There is also a much smaller cap that is black plastic, which only covers the hole in the center of the wheel and not the lugs. Both of these are available only by sourcing it from Europe.
I didn't care for the looks of the North American wheel covers, so after a while spent sporting polished steel wheels and trim rings, I ended up purchasing a cheap set of Corolla knock-off wheel covers on eBay. About 35 bucks for a set of 4. Up close they are obviously cheap, but from a normal viewing distance they are presentable. I actually got a compliment on them from another employee of my company who also drives a TC.