Despite, the cold, rain, hail and snow today (yes really!), I managed to give the GX a good auld belt of the orbital polisher. We stopped off in the Phoeno today and took a fews snaps - shiney!
They were clean to start with but I used Cif (of Jif if you're old skool) to remove the surface dust and followed up with Wonder wheels to remove discolouration. Finally, I put a surface coat of Autoglm polish on the wheels to bring up the shine and to act as a barrier against staining in the future.
Note, I wouldn't recommend using an abrasive on OEM wheels.