Update ButtonDarkModeRenderer.

Author: KlausLoeffelmann

src/System.Windows.Forms/System/Windows/Forms/Controls/Buttons/DarkModeRenderer/ButtonDarkModeRenderer.DarkModeButtonColors.cs

@@ -0,0 +1,64 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Windows.Forms;
+
+internal static partial class ButtonDarkModeRenderer
+{
+    /// <summary>Cache of colors for different button states</summary>
+    private static class DarkModeButtonColors
+    {
+        // Normal Button (non-default)
+        /// <summary>Button background color for normal state (#2B2B2B)</summary>
+        public static Color NormalBackgroundColor => Color.FromArgb(43, 43, 43);
+
+        /// <summary>Button background color for hover state (#3B3B3B)</summary>
+        public static Color HoverBackgroundColor => Color.FromArgb(59, 59, 59);
+
+        /// <summary>Button background color for pressed state (#4B4B4B)</summary>
+        public static Color PressedBackgroundColor => Color.FromArgb(75, 75, 75);
+
+        /// <summary>Button background color for disabled state (#252525)</summary>
+        public static Color DisabledBackgroundColor => Color.FromArgb(37, 37, 37);
+
+        // Default Button
+        /// <summary>Default button background color (#6B2FBF)</summary>
+        public static Color DefaultBackgroundColor => Color.FromArgb(107, 47, 191);
+
+        /// <summary>Default button hover background color (#7C3FD0)</summary>
+        public static Color DefaultHoverBackgroundColor => Color.FromArgb(124, 63, 208);
+
+        /// <summary>Default button pressed background color (#5B1FAF)</summary>
+        public static Color DefaultPressedBackgroundColor => Color.FromArgb(91, 31, 175);
+
+        /// <summary>Default button disabled background color (desaturated accent)</summary>
+        public static Color DefaultDisabledBackgroundColor => Color.FromArgb(85, 40, 140);
+
+        // Text Colors
+        /// <summary>Normal text color (#E0E0E0)</summary>
+        public static Color NormalTextColor => Color.FromArgb(224, 224, 224);
+
+        /// <summary>Default button text color (#FFFFFF)</summary>
+        public static Color DefaultTextColor => Color.White;
+
+        /// <summary>Disabled text color (~40% opacity, #606060)</summary>
+        public static Color DisabledTextColor => Color.FromArgb(96, 96, 96);
+
+        // Border Colors
+        /// <summary>Button single border color (#555555)</summary>
+        public static Color SingleBorderColor => Color.FromArgb(85, 85, 85);
+
+        /// <summary>Button top-left border color (#555555)</summary>
+        public static Color TopLeftBorderColor => Color.FromArgb(85, 85, 85);
+
+        /// <summary>Button bottom-right border color (#222222)</summary>
+        public static Color BottomRightBorderColor => Color.FromArgb(34, 34, 34);
+
+        // Focus Colors
+        /// <summary>Focus indicator color (#AAAAAA)</summary>
+        public static Color FocusIndicatorColor => Color.FromArgb(170, 170, 170);
+
+        /// <summary>Default button focus indicator color (#FFFFFF)</summary>
+        public static Color DefaultFocusIndicatorColor => Color.White;
+    }
+}