The following code is an attempt to 'fade' the material on a 3D Model FBX Import:

private void Start() {

    GameObject.Find("Bip01_Pelvis").renderer.material.shader = 
    Shader.Find("Bumped Diffuse");
    //Find the material in the Character hierarchy and set its alpha
    GameObject.Find("Bip01_Pelvis").renderer.material.SetColor(_"Color", 
    new Color(0,0,0, GameObject.Find("Bip01_Pelvis").renderer.material.a-0.75f));
}

The material on the model 'looks funny' when it is set to a Transparent/Cutout/Bumped Diffuse"); but not when it is just a Bumped Diffuse. How can I enabled/disable fading out the character models material? Do I need to create Shader and write OpenGL/DirectX API code to control fading a character material?