dotnet-core/release-notes/3.0/preview/api-diff/preview4/3.0-preview4_System.Drawing.md

System.Drawing

 namespace System.Drawing {
+    public static class SystemColors {
+        public static Color ActiveBorder { get; }
+        public static Color ActiveCaption { get; }
+        public static Color ActiveCaptionText { get; }
+        public static Color AppWorkspace { get; }
+        public static Color ButtonFace { get; }
+        public static Color ButtonHighlight { get; }
+        public static Color ButtonShadow { get; }
+        public static Color Control { get; }
+        public static Color ControlDark { get; }
+        public static Color ControlDarkDark { get; }
+        public static Color ControlLight { get; }
+        public static Color ControlLightLight { get; }
+        public static Color ControlText { get; }
+        public static Color Desktop { get; }
+        public static Color GradientActiveCaption { get; }
+        public static Color GradientInactiveCaption { get; }
+        public static Color GrayText { get; }
+        public static Color Highlight { get; }
+        public static Color HighlightText { get; }
+        public static Color HotTrack { get; }
+        public static Color InactiveBorder { get; }
+        public static Color InactiveCaption { get; }
+        public static Color InactiveCaptionText { get; }
+        public static Color Info { get; }
+        public static Color InfoText { get; }
+        public static Color Menu { get; }
+        public static Color MenuBar { get; }
+        public static Color MenuHighlight { get; }
+        public static Color MenuText { get; }
+        public static Color ScrollBar { get; }
+        public static Color Window { get; }
+        public static Color WindowFrame { get; }
+        public static Color WindowText { get; }
+    }
 }