Unity3d 如何找到游戏对象并改变其颜色

//游戏对象
private var obj:GameObject;
//渲染器
private var render:Renderer;
//贴图
private var texture:Texture;

function Start ()
{
    //获取游戏对象
    obj = GameObject.Find("Cube");
    //获取该游戏对象的渲染器
    render = obj.GetComponent("Renderer");
}

 function OnGUI()
 {
     if (GUILayout.Button("Color",GUILayout.Width(),GUILayout.Height()))
     {
         //改变渲染的颜色
         render.material.color = Color.green;
         //添加组件贴图
         render.material.mainTexture = null;
     }

     if(GUILayout.Button("add",GUILayout.Width(),GUILayout.Height()))
     {

         render.material = null;
         render.material.mainTexture = texture;
     }
 }  

更改Shader

,如NewShader

Shader "Custom/NewShader" {
    Properties {
        _Color ("Main Color", COLOR) = (,,,)
        _AmbientColor("Ambient Color",COLOR) =(,,,)
    }
    SubShader {
        Pass {
            Material {
                Diffuse [_Color]
                Ambient [_AmbientColor]
            }
            Lighting On
        }
    }
}

在代码中设置颜色

        CubeObj.renderer.material.shader = Shader.Find("Custom/NewShader");     //设置材质的shader
        print(CubeObj.renderer.material.GetColor("_AmbientColor"));  //获取_AmbientColor 的颜色
        CubeObj.renderer.material.SetColor("_AmbientColor", Color.red);  //设置_AmbientColor的颜色

                //Renderer[] renders = obj.GetComponentsInChildren<Renderer>();

                //foreach (Renderer one in renders)
                //{
                //    one.material.shader = Shader.Find("Custom/NewShader");
                //    Color changeColor = new Color(1,0.33f,1,1);
                //    one.material.SetColor("_IlluminCol", changeColor);  //设置颜色
                //}