Applies a stone color and vein color pattern.
The Marble map can specify two colors to the material. The first is the Stone color and the second is the Vein color. The vein spacing and vein width can be modified.
Click the Click for Marble settings button. 
The map property settings specific to Marble are displayed. The
description of the settings can be found in the Marble
Property Settings under the MATERIALS
command.
An example of the Marble map.
