Do some 3D Modelling

I want to render the STL file attached. A little bit of 3D modelling editting has to be done. The STL contains a box. The box has to be rendered as an studio like render, see this example: [login to view URL] I want the box to have this glossy plactic feel: [login to view URL] The box color will be gray (210,215,211) except the two triangles selected in the file "[login to view URL]" that have to be red (231,76,60) whit the same type of material. In the [login to view URL] is depicted the place where a microUSB connector has to be placed and further instructions of the render. I want studio like render of this box with the instructions provided here and in the image STL_index.png. You have to provide the render in Full HD resolution and the original 3Dstudio Max/Maya files.