Through one of our outsourced rendering jobs, I came across a script that allows you to render a scene where each material is assigned a various flat color, allowing for very easy compositing in Photoshop. It’s a very handy script for post-render editing, trouble is I don’t know where to find it. I’ve attached a shot of one of the render passes using the script. Anyone know where this script resides?

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i think this will help u..
http://www.scriptspot.com/3ds-max/auto-object-id
http://www.scriptspot.com/3ds-max/l-pass-manager. 

Akram
Technical Artist,
FxLabs Studios, India
http://akira-techart.blogspot.com/

If come to G-Buffer ID then try this --
http://www.scriptspot.com/3ds-max/g-buffer-id

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