Is that their natural color or were they stained or painted that beautiful charcoal color? Just beautiful. If stained/painted, could you share the color and manufacturer(s)? So elegant. You guys did a kick-ass job on this home-what a dump it was. Beautiful stains on the window frames and concrete; using CorTen on your fence and fire pits; framing the views. Thanks for sharing it with us. We just re-sided our entire home in CorTen and stainless steel so it's fun to see others using it too.