How to get picture like this?

Hello! I wanna get final picture in Unity like below.
These pictures are made in Cinema 4D 14R with global illumination (IR + QMC mode).

The question in getting bright color and not smooth geometry in Unity.

I found a discussion on reddit, but there is no answer.
Also there is a tutorial on tutsplus, I’ gonna try it soon.

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Those exact trees are from this Unity Cookie tutorial…

http://cgcookie.com/unity/2013/03/21/quick-tips-combining-multiple-materials-into-a-single-draw-call/

Bake lighting and global illumination to vertex colors, and use a vertex colored, unlit shader.

Import, don’t generate, mesh normals.

And that’s it!