diff --git a/SunnyUI/Controls/UITabControl.cs b/SunnyUI/Controls/UITabControl.cs
index 27cd7527..ac25aaea 100644
--- a/SunnyUI/Controls/UITabControl.cs
+++ b/SunnyUI/Controls/UITabControl.cs
@@ -31,6 +31,7 @@
  * 2022-05-17: V3.1.9 修复了一个首页无法关闭的问题
  * 2022-06-19: V3.2.0 多页面框架关闭页面时执行UIPage的FormClosed事件
  * 2023-05-12: V3.3.6 重构DrawString函数
+ * 2023-11-06: V3.5.2 重构主题
 ******************************************************************************/
 
 using Sunny.UI.Win32;
@@ -356,16 +357,10 @@ namespace Sunny.UI
             {
                 _fillColor = value;
                 AfterSetFillColor(value);
-                SetStyleCustom();
+                Invalidate();
             }
         }
 
-        private void SetStyleCustom(bool needRefresh = true)
-        {
-            _style = UIStyle.Custom;
-            if (needRefresh) Invalidate();
-        }
-
         /// <summary>
         /// 边框颜色
         /// </summary>
@@ -421,7 +416,7 @@ namespace Sunny.UI
                 if (tabSelectedForeColor != value)
                 {
                     tabSelectedForeColor = value;
-                    SetStyleCustom();
+                    Invalidate();
                 }
             }
         }
@@ -463,7 +458,7 @@ namespace Sunny.UI
                 if (tabSelectedHighColor != value)
                 {
                     tabSelectedHighColor = value;
-                    SetStyleCustom();
+                    Invalidate();
                 }
             }
         }
@@ -488,12 +483,12 @@ namespace Sunny.UI
             }
         }
 
-        private UIStyle _style = UIStyle.Blue;
+        private UIStyle _style = UIStyle.Inherited;
 
         /// <summary>
         /// 主题样式
         /// </summary>
-        [DefaultValue(UIStyle.Blue), Description("主题样式"), Category("SunnyUI")]
+        [DefaultValue(UIStyle.Inherited), Description("主题样式"), Category("SunnyUI")]
         public UIStyle Style
         {
             get => _style;
diff --git a/SunnyUI/Frames/UIPage.cs b/SunnyUI/Frames/UIPage.cs
index 99cefd9d..c643adc8 100644
--- a/SunnyUI/Frames/UIPage.cs
+++ b/SunnyUI/Frames/UIPage.cs
@@ -40,11 +40,11 @@
  * 2023-07-27: V3.4.1 默认提示弹窗TopMost为true
  * 2023-10-09: V3.5.0 增加一个在窗体显示后延时执行的事件
  * 2023-10-26: V3.5.1 字体图标增加旋转角度参数SymbolRotate
+ * 2023-11-06: V3.5.2 重构主题
 ******************************************************************************/
 
 using System;
 using System.ComponentModel;
-using System.Diagnostics;
 using System.Drawing;
 using System.Drawing.Design;
 using System.Windows.Forms;
@@ -59,7 +59,7 @@ namespace Sunny.UI
 
         private ToolStripStatusLabelBorderSides _rectSides = ToolStripStatusLabelBorderSides.None;
 
-        protected UIStyle _style = UIStyle.Blue;
+        protected UIStyle _style = UIStyle.Inherited;
 
         [Browsable(false)]
         public IFrame Frame
@@ -290,7 +290,10 @@ namespace Sunny.UI
 
         public void Render()
         {
-            SetStyle(UIStyles.Style);
+            if (!DesignMode && UIStyles.Style.IsValid())
+            {
+                Style = UIStyles.Style;
+            }
         }
 
         private int _symbolSize = 24;
@@ -403,28 +406,10 @@ namespace Sunny.UI
             {
                 _rectColor = value;
                 AfterSetRectColor(value);
-                _style = UIStyle.Custom;
                 Invalidate();
             }
         }
 
-        protected bool IsDesignMode
-        {
-            get
-            {
-#if NETFRAMEWORK
-                var ReturnFlag = false;
-                if (LicenseManager.UsageMode == LicenseUsageMode.Designtime)
-                    ReturnFlag = true;
-                else if (Process.GetCurrentProcess().ProcessName == "devenv")
-                    ReturnFlag = true;
-                return ReturnFlag;
-#else
-                return DesignMode || IsAncestorSiteInDesignMode;
-#endif
-            }
-        }
-
         [DefaultValue(ToolStripStatusLabelBorderSides.None)]
         [Description("边框显示位置"), Category("SunnyUI")]
         public ToolStripStatusLabelBorderSides RectSides
@@ -455,7 +440,7 @@ namespace Sunny.UI
         /// <summary>
         /// 主题样式
         /// </summary>
-        [DefaultValue(UIStyle.Blue), Description("主题样式"), Category("SunnyUI")]
+        [DefaultValue(UIStyle.Inherited), Description("主题样式"), Category("SunnyUI")]
         public UIStyle Style
         {
             get => _style;
@@ -727,7 +712,6 @@ namespace Sunny.UI
                 if (controlBoxForeColor != value)
                 {
                     controlBoxForeColor = value;
-                    _style = UIStyle.Custom;
                     Invalidate();
                 }
             }
@@ -746,7 +730,6 @@ namespace Sunny.UI
                 if (ControlBoxFillHoverColor != value)
                 {
                     controlBoxFillHoverColor = value;
-                    _style = UIStyle.Custom;
                     Invalidate();
                 }
             }
@@ -905,20 +888,6 @@ namespace Sunny.UI
             }
         }
 
-        protected override void OnBackColorChanged(EventArgs e)
-        {
-            base.OnBackColorChanged(e);
-            AfterSetFillColor(BackColor);
-            _style = UIStyle.Custom;
-        }
-
-        protected override void OnForeColorChanged(EventArgs e)
-        {
-            base.OnForeColorChanged(e);
-            AfterSetForeColor(ForeColor);
-            _style = UIStyle.Custom;
-        }
-
         private int titleHeight = 35;
 
         [Description("面板高度"), Category("SunnyUI")]
diff --git a/SunnyUI/Style/UIStyles.cs b/SunnyUI/Style/UIStyles.cs
index 09f6cbf9..2ab118ea 100644
--- a/SunnyUI/Style/UIStyles.cs
+++ b/SunnyUI/Style/UIStyles.cs
@@ -405,7 +405,7 @@ namespace Sunny.UI
 
             foreach (var page in Pages.Values)
             {
-                page.Style = style;
+                page.SetInheritedStyle(style);
             }
         }