Hey Gianlupo, here's Kweassa's own words
As you can see it doesn't look bad under some lighting angles(bottom pic), but I'm having trouble depicting metallic conditions under low light intensity
and then right after that, he said:
Studying methods to depict baremetal looks is an interesting experience. Not sure if its sufficient, but seems much better than first attempts.
Pic was taken at 14:00, the same time, as the very first pic. Much better metallic look despite same sun light conditions.