Autodesk AUTOCAD 2006, Command Reference Manual, Page: 1016 / 1490

Attributes
Specifies the material attribute to change. The Value and Color settings affect
the selected attribute. If a setting does not apply to an attribute, it is not
available while that attribute is selected.
Ambient
Adjusts the material’s ambient (shadow) color. You can adjust the color
using Value and the controls in the Color area. The color swatch displays
the color.
Bump Map
Makes the Bitmap Blend area available to specify the file name of a bump
map.
By ACI
Matches the object’s material color with the object’s AutoCAD Color Index
color. This option is available for the color attribute only. It is available for
the ambient and reflection attributes only if they are not locked.
Color Swatch
Displays the Windows Color dialog box, in which you can adjust a color
by HLS or RGB components.
Color System
Specifies the color system to use. You can specify RGB (Red, Green, Blue)
or HLS (Hue, Lightness, Saturation).
Color/Pattern
Adjusts the main (diffuse) color of the material. You can adjust the color
using Value and the controls in the Color area.
Hue, Lightness, Saturation
Adjusts the color’s HLS (Hue, Lightness, Saturation) components directly.
You can enter values or use the scroll bars. Adjusting Hue changes the shade
of the color. Increasing Lightness increases the luminance or brightness of
the color by adding white. Increasing Saturation increases the purity of the
color. The higher the saturation, the less gray in the color.
Lock
Locks the attribute’s color to the main color. This setting is available for
the ambient and reflection attributes only.
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