Yes fronts are chromed and the rear is a gold centre with a polished silver finish on the dish. The previous owner chromed the fronts, but you could get the front regolded again, just I never bothered to. I've had them for nearly a year driving around no one given me any shit cause usually they only see the back of my car
As for offsets, no idea. But it'll fit a soarer as indicated and supra jza80's. Remember the rear is a 9.5" wide rim so you may have clearance problems on older ma70 or jza70 supras, but your welcome to trial fit the rims if your located in sydney.
There is someone very interested in the rims and sounds like there keen to buy, but I can't offload them until my replacement rims are delivered.