improve:UI

Ink Canvas/Controls/Toolbar/Items/ClearToolItem.cs

@@ -16,6 +16,7 @@ namespace Ink_Canvas.Controls.Toolbar.Items
         public override string DefaultAnchorName => "StackPanelCanvasControls";
 
         protected override string IconBrushResourceKey => "RedBrush";
+        protected override string LabelBrushResourceKey => "RedBrush";
 
         protected override void OnClick(IToolbarHost host, object sender, MouseButtonEventArgs e)
             => host.Window.SymbolIconDelete_MouseUp(sender, e);

Ink Canvas/Controls/Toolbar/Items/ToolbarImageButtonItemBase.cs

@@ -22,6 +22,9 @@ namespace Ink_Canvas.Controls.Toolbar.Items
         /// <summary>DynamicResource 名称，用于 IconBrush。默认为 null（使用控件自带前景色）。</summary>
         protected virtual string IconBrushResourceKey => null;
 
+        /// <summary>DynamicResource 名称，用于 LabelBrush（文字颜色）。默认为 null（使用控件自带前景色）。</summary>
+        protected virtual string LabelBrushResourceKey => null;
+
         protected abstract void OnClick(IToolbarHost host, object sender, MouseButtonEventArgs e);
 
         /// <summary>构建后调用，用于回填 MainWindow 的原命名属性（partial 扩展里的 Attach*）。可选。</summary>
@@ -38,6 +41,11 @@ namespace Ink_Canvas.Controls.Toolbar.Items
                 if (btn.TryFindResource(IconBrushResourceKey) is Brush brush) btn.IconBrush = brush;
                 else btn.SetResourceReference(ToolbarImageButton.IconBrushProperty, IconBrushResourceKey);
             }
+            if (!string.IsNullOrEmpty(LabelBrushResourceKey))
+            {
+                if (btn.TryFindResource(LabelBrushResourceKey) is Brush brush) btn.LabelBrush = brush;
+                else btn.SetResourceReference(ToolbarImageButton.LabelBrushProperty, LabelBrushResourceKey);
+            }
             btn.ButtonMouseUp += (s, e) => OnClick(host, s, e);
             AfterBuild(host, btn);
             return btn;