Steel Cladding on 2nd Net-Zero Energy House underway. October 24, 2015 Matthew Salenger Intermediate painted panels of desert purple will occur at random intervals. The first house, on the right, had yellow-green vertical stripes. Both colors were carefully chosen to work well with fully rusted panels. The interior is nearing completion as well. Doors and windows are installed. Gypsum Board is getting textured (smooth, of course).