更新

WPFDark/Controls/Converters/DoubleColorToBrushConverter.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace WPFDark.Controls.Converters
+{
+    public class DoubleColorToBrushConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (!(value is DoubleColor item))
+                return null!;
+
+            return Caches.GetSolidColorBrush(item.ByteColor);
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}