스타일 가이드 적용 완료. UTKCOlorPicker, UTKDatePicker 확인해야 함

Assets/Sample/UIToolkit/UTKColorPickerSample.cs

@@ -1,5 +1,6 @@
 #nullable enable
 using System;
+using Cysharp.Threading.Tasks;
 using UnityEngine;
 using UnityEngine.UIElements;
 using UVC.UIToolkit.Modal;
@@ -105,7 +106,7 @@ namespace UVC.Sample.UIToolkit
             alphaRow.style.marginBottom = 15;
 
             _useAlphaToggle = new Toggle("Use Alpha Channel");
-            _useAlphaToggle.value = false;
+            _useAlphaToggle.value = true;
             _useAlphaToggle.style.color = Color.white;
             alphaRow.Add(_useAlphaToggle);
 
@@ -117,6 +118,12 @@ namespace UVC.Sample.UIToolkit
             openPickerBtn.style.marginBottom = 10;
             container.Add(openPickerBtn);
 
+            // Async 버튼
+            var openPickerAsyncBtn = new Button(() => OpenColorPickerAsync().Forget()) { text = "Open Color Picker (Async)" };
+            openPickerAsyncBtn.style.height = 32;
+            openPickerAsyncBtn.style.marginBottom = 10;
+            container.Add(openPickerAsyncBtn);
+
             // 프리셋 색상 버튼들
             var presetLabel = new Label("Preset Colors:");
             presetLabel.style.color = Color.white;
@@ -162,6 +169,30 @@ namespace UVC.Sample.UIToolkit
             _currentPicker.OnColorSelected += OnColorSelected;
         }
 
+        private async UniTaskVoid OpenColorPickerAsync()
+        {
+            if (_root == null) return;
+
+            bool useAlpha = _useAlphaToggle?.value ?? true;
+
+            // ShowAsync를 사용하여 색상 선택 대기
+            // OK 클릭 시 선택된 색상 반환, 취소/닫기 시 _currentColor 반환
+            Color selectedColor = await UTKColorPicker.ShowAsync(_root, _currentColor, "Select Color (Async)", useAlpha);
+
+            // 결과 처리
+            _currentColor = selectedColor;
+            if (_colorPreview != null)
+            {
+                _colorPreview.style.backgroundColor = selectedColor;
+            }
+            if (_colorLabel != null)
+            {
+                _colorLabel.text = ColorToHex(selectedColor);
+            }
+
+            Debug.Log($"[Async] Color Result: {ColorToHex(selectedColor)}");
+        }
+
         private void OnColorChanged(Color color)
         {
             // 실시간 미리보기 업데이트