Add a color to the selected mesh / Add different types of meshes (i.e. type#A or type#B)

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Go to JSC3D.Viewer.prototype.mouseDownHandler
2. Add 
    if(this.onmousedown) {
        var info = this.pick(e.clientX, e.clientY);
        this.onmousedown(info.canvasX, info.canvasY, e.button, info.depth, info.mesh);
        //testing - add a point or mesh to the clicked point or mesh
        var newMat = new JSC3D.Mesh.Material('', 0, 0x000080, 0, true);
        info.mesh.setMaterial(newMat);
        JSC3D.Viewer.update();
    }

What is the expected output? What do you see instead?
The color of the selected mesh should change; nothing does get changed 

What version of the product are you using? On what operating system?
latest version of jsc3d as of jan 27'15

Please provide any additional information below.
Type A would be the center of the entire image
Type B would be the center of masses (i.e. head, leg, body, etc) 

Original issue reported on code.google.com by [email protected] on 26 Jan 2015 at 5:57