Use `Pens.*` instead of creating new ones from `Color` constants

src/BizHawk.Client.EmuHawk/CustomControls/ControlRenderer/GdiPlusRenderer.cs

@@ -6,7 +6,8 @@ namespace BizHawk.Client.EmuHawk.CustomControls
 	{
 		private Graphics _graphics;
 
-		private readonly Pen _currentPen = new Pen(Color.Black);
+		private readonly Pen _currentPen = Pens.Black.GetMutableCopy();
+
 		private readonly SolidBrush _currentBrush = new SolidBrush(Color.Black);
 		private readonly SolidBrush _currentStringBrush = new SolidBrush(Color.Black);
 		private Font _currentFont;

src/BizHawk.Client.EmuHawk/CustomControls/ScreenshotForm.cs

@@ -101,7 +101,7 @@ namespace BizHawk.Client.EmuHawk
 			e.Graphics.DrawImage(_bitmap!, new Rectangle(0, 0, Width, _drawingHeight));
 			if (Padding > 0)
 			{
-				e.Graphics.DrawRectangle(new Pen(Brushes.Black), new Rectangle(new Point(0, _drawingHeight), new Size(Width - 1, Padding - 1)));
+				e.Graphics.DrawRectangle(Pens.Black, new Rectangle(new Point(0, _drawingHeight), new Size(Width - 1, Padding - 1)));
 				e.Graphics.DrawString(Text, Font, Brushes.Black, new Rectangle(2, _drawingHeight, Width - 2, Height));
 			}
 

src/BizHawk.Client.EmuHawk/Extensions/DrawingExtensions.cs

@@ -0,0 +1,12 @@
+#nullable enable
+
+using System.Drawing;
+
+namespace BizHawk.Client.EmuHawk
+{
+	public static class DrawingExtensions
+	{
+		public static Pen GetMutableCopy(this Pen p)
+			=> (Pen) p.Clone();
+	}
+}

src/BizHawk.Client.EmuHawk/config/AnalogRangeConfig.cs

@@ -8,8 +8,9 @@ namespace BizHawk.Client.EmuHawk
 		private const int ScaleFactor = 4;
 		private const int _3DPadding = 5;
 
-		private readonly Pen _blackPen;
-		private readonly Pen _bluePen;
+		private readonly Pen _blackPen = Pens.Black;
+
+		private readonly Pen _bluePen = Pens.Cyan;
 
 		private int _maxX = 127;
 		private int _maxY = 127;
@@ -76,9 +77,6 @@ namespace BizHawk.Client.EmuHawk
 			BackColor = Color.Gray;
 			BorderStyle = BorderStyle.Fixed3D;
 
-			_blackPen = new Pen(Brushes.Black);
-			_bluePen = new Pen(Brushes.Cyan);
-
 			InitializeComponent();
 		}
 

src/BizHawk.Client.EmuHawk/config/Messages/MessageEdit.cs

@@ -161,7 +161,7 @@ namespace BizHawk.Client.EmuHawk
 					break;
 			}
 
-			using var p = new Pen(Color.Black);
+			var p = Pens.Black;
 			e.Graphics.DrawLine(p, new Point(x, y), new Point(x + 8, y + 8));
 			e.Graphics.DrawLine(p, new Point(x + 8, y), new Point(x, y + 8));
 			e.Graphics.DrawRectangle(p, new Rectangle(x, y, 8, 8));

src/BizHawk.Client.EmuHawk/tools/HexEditor/HexEditor.cs

@@ -140,7 +140,8 @@ namespace BizHawk.Client.EmuHawk
 
 		private WatchSize WatchSize => (WatchSize)DataSize;
 
-		private readonly Pen _blackPen = new Pen(Color.Black);
+		private readonly Pen _blackPen = Pens.Black;
+
 		private SolidBrush _freezeBrush;
 		private SolidBrush _freezeHighlightBrush;
 		private SolidBrush _highlightBrush;

src/BizHawk.Client.EmuHawk/tools/VirtualPads/controls/components/AnalogStickPanel.cs

@@ -132,7 +132,8 @@ namespace BizHawk.Client.EmuHawk
 		private int GfxToRealY(int val) =>
 			MaybeReversedInY((_rangeY.Start + ((val - PixelMinY) / ScaleY).RoundToInt()).ConstrainWithin(_rangeY));
 
-		private readonly Pen _blackPen = new Pen(Brushes.Black);
+		private readonly Pen _blackPen = Pens.Black;
+
 		private readonly Pen _bluePen = new Pen(Brushes.Blue, 2);
 		private readonly Pen _grayPen = new Pen(Brushes.Gray, 2);