GUIColor Attribute特性：用于任何屬性，并更改用于繪制屬性的GUI顏色。

繪制顏色提供兩種形式，一種為直接填寫RGBA

    [GUIColor(0.3f, 0.8f, 0.8f, 1f)]
    public int ColoredInt1;

    [GUIColor(0.3f, 0.8f, 0.8f, 1f)]
    public int ColoredInt2;

    [ButtonGroup]
    [GUIColor(0, 1, 0)]
    private void Apply()
    {
        Debug.Log("應用");
    }

    [ButtonGroup]
    [GUIColor(1, 0.6f, 0.4f)]
    private void Cancel()
    {
        Debug.Log("取消");
    }

另一種是提供一個返回Color的方法，所以這種方式可有實現(xiàn)動態(tài)顏色效果，逼格滿滿

    [GUIColor("GetButtonColor")]
    [Button(ButtonSizes.Gigantic)]
    private static void IAmFabulous()
    {
    }

    private static Color GetButtonColor()
    {
        Sirenix.Utilities.Editor.GUIHelper.RequestRepaint();
        return Color.HSVToRGB(Mathf.Cos((float)UnityEditor.EditorApplication.timeSinceStartup + 1f) * 0.225f + 0.325f, 1, 1);
    }

當然還有另一種寫法，使用@關鍵字將對應的方法體以字符串的形式傳入進去，也能達到和方法一樣的效果

    // [GUIColor("@Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup))")]
    // [GUIColor("CustomColor")]
    // 這兩個寫法相等
    [Button(ButtonSizes.Large)]
    [GUIColor("@Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup))")]
    private static void Expressive_One()
    {
    }

    [Button(ButtonSizes.Large)]
    [GUIColor("CustomColor")]
    private static void Expressive_Two()
    {
    }

# if UNITY_EDITOR
    public Color CustomColor()
    {
        return Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup));
    }
# endif

完整示例代碼

using Sirenix.OdinInspector;
using UnityEditor;
using UnityEngine;

public class GUIColorExample : MonoBehaviour
{
    [GUIColor(0.3f, 0.8f, 0.8f, 1f)]
    public int ColoredInt1;

    [GUIColor(0.3f, 0.8f, 0.8f, 1f)]
    public int ColoredInt2;

    [ButtonGroup]
    [GUIColor(0, 1, 0)]
    private void Apply()
    {
        Debug.Log("應用");
    }

    [ButtonGroup]
    [GUIColor(1, 0.6f, 0.4f)]
    private void Cancel()
    {
        Debug.Log("取消");
    }

    [GUIColor("GetButtonColor")]
    [Button(ButtonSizes.Gigantic)]
    private static void IAmFabulous()
    {
    }

    private static Color GetButtonColor()
    {
        Sirenix.Utilities.Editor.GUIHelper.RequestRepaint();
        return Color.HSVToRGB(Mathf.Cos((float)UnityEditor.EditorApplication.timeSinceStartup + 1f) * 0.225f + 0.325f, 1, 1);
    }


    // [GUIColor("@Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup))")]
    // [GUIColor("CustomColor")]
    // 這兩個寫法相等
    [Button(ButtonSizes.Large)]
    [GUIColor("@Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup))")]
    private static void Expressive_One()
    {
    }

    [Button(ButtonSizes.Large)]
    [GUIColor("CustomColor")]
    private static void Expressive_Two()
    {
    }

# if UNITY_EDITOR
    public Color CustomColor()
    {
        return Color.Lerp(Color.red, Color.green, Mathf.Sin((float)EditorApplication.timeSinceStartup));
    }
# endif
}

更多教程內(nèi)容詳見：革命性Unity 編輯器擴展工具 --- Odin Inspector 系列教程