Look across a forested valley on a clear full-moon night and the far trees are dark and cool, like the trees beside you. Before, the forest past about 200 m stayed bright, warm and daylit under a black sky, as if a daytime mountain had been pasted under the night.
The cause was the warm light that bounces up off the ground. It was a fixed brightness that kept its daytime value all night, and it lit everything in the distance. It now follows the light that is really on the ground, sun or moon, so it fades through dusk and the far forest darkens with the ground near you. Midday is exactly as before.
The dog and the wolves stopped glowing white after dark as well. Their fur took in the night sky with nothing blocking it, so a coat in the grass glowed and lit the ground under it. Each coat scatters less sky as night falls, and looks the same by day. The lasting fix, letting grass shade fur the way it shades the ground, is not done.
