How do I set the color for CustomVertex.Transformed?

When I use CustomVertex.TransformedColored.It have a color proprtty.

So I can easy set the color for every point. But because I want to draw a lot of triangles using same color.

so I use CustomVertex.Transformed in order to save the memory.but when I draw they.(ps:use DrawIndexedPrimitives()) .It show white color.

Please someone tell me how to set a color for every triangles .

[404 byte] By [hackbabu] at [2007-12-23]