The color of the snow that lies on the top of the surface.
Surface_color
The color of the surface that the snow lies on top of.
Threshold
Determines the maximum slope that will hold snow. The valid/slider range is 0 (90 degrees from horizontal) to 1 (0 degrees
from horizontal). The default value is 0.5 (45 degrees from horizontal).
Depth_decay
The rate at which the snow color blends into the surface color. The slider range is 0 to 10. The default value is 5.
Thickness
The apparent depth of the snow. Thickness controls the opacity of the snow (deeper snow is more opaque). The valid/slider
range is 0 (transparent) to 1 (opaque). The default value is 1.
