Copper, of course!
Yesterday I photographed the newly remodeled Reeves-Wiedeman Company building ("Plumbing Supplies For Contractors and Industry") at 3635 Main, KCMO, for their tax credit application. Helix was the architecture firm involved, and I really like their work.
A spectacular feature is this skylight/atrium lined with copper located over the order counter.
The entire elevator bay is clad in copper as well.
The elevator bay is mirrored by a copper wall in the office lobby.
A stairway surrounds the elevator bay providing a dramatic blast of sleek copper color. Nice!