说明：  在VP中，利用OPENGL中的颜色数组实现场景中模型的颜色变换.
(This sample uses geometry representations to create an alternate representation of the esprit model that uses a separate color array and allows the selection of which color array to use at run time. The color tracking is enabled so that our material diffuse colors are overridden by our vertex colors. To do this we ll enable the "All Geometries Lit" and "Use Material Diffuse Color" options in the "Geometry Configuration" tab of the "Objects" LynX Prime panel.)