how to Change color for back faces or flipped normals

[GoogleCodeExporter]

hi every thing works fine but  i was trying to identify backfaces 
i have to review several .obj models 
if i turn of mesh.isDoubleSided = false
i can not see the model properly is it possible to change the color of back 
faces so that we can identify them easily

Original issue reported on code.google.com by simha....@gmail.com on 22 Feb 2015 at 4:55

[GoogleCodeExporter]

I don't think this is available in current implementation until you modify the 
rasterization pipeline manually.

Original comment by Humu2...@gmail.com on 24 Feb 2015 at 8:53

[GoogleCodeExporter]

how to modify the rasterization pipeline

Original comment by dnf...@gmail.com on 23 Apr 2015 at 1:23