Is it possible to generate terrains like this visual style:
https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xfp1/t31.0-8/10835084_920094168014714_6077643978636429636_o.png
https://www.assetstore.unity3d.com/en/#!/content/18572
With no textures, just vertex colors?