That's the thing, the cladding here is fairly interesting in the way it plays with the light. It's a fairly saturated shade of dark green when viewed straight on, but has a mirror sheen when viewed at an angle. In this case it's reflecting grey skies, hence looking silvery. The cladding here will make this office tower look fairly unique among the rest of the skyline, so it gets thumbs up from me.Thanks for investigating! It’s funny though, your pic now makes the lower portion look silvery, while the upper looks green ?