(Document not fully finished)
In Miarmy 3.5, we can assign each agent geometry different vertex color. And use this vertex color along with the gradient shader in 3ds Max for variation the color offset. Make each agent look like unique color in scene.
Workflow
When we export the render contents from Maya, the system will automatically assign a random gray vertex color for each one for geometry.
Then in 3ds Max, we can use this randomized vertex color and gradient shader for variation the diffuse color of geometry.
The result will be like below picture