c#脚本控制shader

如图所示，c#脚本控制shader颜色。

 public class ControlColor : MonoBehaviour
 {
     public Color color = new Color(, , , );
     public Material mat;
     public void ChangeColor()
     {
         mat.SetVector("_Diffuse", color);
     }
 }

 [CustomEditor(typeof(ControlColor))]
 public class Edit_ControlColor : Editor {
     ControlColor scr;//脚本本体
     SerializedObject serObj;
     SerializedProperty color;
     SerializedProperty mat;

     public void OnEnable()
     {
         scr = (ControlColor)target;
         serObj = new SerializedObject(target);
         color = serObj.FindProperty("color");
         mat = serObj.FindProperty("mat");
     }
     public override void OnInspectorGUI()
     {
         serObj.Update();
         EditorGUILayout.PropertyField(color,new GUIContent("Color"));
         EditorGUILayout.PropertyField(mat,new GUIContent("Mat"));
         serObj.ApplyModifiedProperties();
         scr.ChangeColor();
     }
 }

 // Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

 Shader "Custom/Color"
 {
     Properties
     {
          _Diffuse("Diffuse",Color)=(,,,)
     }
     SubShader
     {
         Tags { "RenderType"="Opaque" }
         LOD 

         Pass
         {
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag

             #include "UnityCG.cginc"
             float4 _Diffuse;

             struct appdata
             {
                 float4 vertex : POSITION;
                 float2 uv : TEXCOORD0;
             };

             struct v2f
             {
                 float4 pos : SV_POSITION;
             };

             v2f vert (appdata v)
             {
                 v2f o;
                o.pos=UnityObjectToClipPos(v.vertex);
                return o;
             }

             fixed4 frag (v2f i) : SV_Target
             {
                 return _Diffuse;
             }
             ENDCG
         }
     }
 }