Make a SharedGraphics directory for classes shared between Kernel and LibGUI.

SharedGraphics/Color.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <AK/Types.h>
+
+typedef dword RGBA32;
+
+class Color {
+public:
+    enum NamedColor {
+        Black,
+        White,
+        Red,
+        Green,
+        Blue,
+        Yellow,
+        Magenta,
+        DarkGray,
+        MidGray,
+        LightGray,
+    };
+
+    Color() { }
+    Color(NamedColor);
+    Color(byte r, byte g, byte b) : m_value((r << 16) | (g << 8) | b) { }
+    Color(RGBA32 rgba) : m_value(rgba) { }
+
+    RGBA32 value() const { return m_value; }
+
+private:
+    RGBA32 m_value { 0 };
+};