This exhibition originally modeled in Rhinoceros but i export it to 3Dsmax for vray and material.You can easily change the color of each part by a few click ( i make it easy in material editor)it is Vray-ready,all the textures and materials are set, just open the max file and hit the render button :)
This model seperated by polygon, it means you can apply any color in any software and it doesnt need UV mapping.
File included:.Max (2016).FBX.OBJ.3DSKeyshot file