diff --git a/Source/OpenTK/Graphics/Color4.cs b/Source/OpenTK/Graphics/Color4.cs
new file mode 100644
index 00000000..246acf95
--- /dev/null
+++ b/Source/OpenTK/Graphics/Color4.cs
@@ -0,0 +1,149 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Drawing;
+
+namespace OpenTK.Graphics
+{
+    /// <summary>
+    /// Represents a color with 4 floating-point components (R, G, B, A).
+    /// </summary>
+    public struct Color4 : IEquatable<Color4>
+    {
+        #region Fields
+
+        /// <summary>
+        /// The red component of this Color4 structure.
+        /// </summary>
+        public readonly float R;
+        
+        /// <summary>
+        /// The green component of this Color4 structure.
+        /// </summary>
+        public readonly float G;
+        
+        /// <summary>
+        /// The blue component of this Color4 structure.
+        /// </summary>
+        public readonly float B;
+        
+        /// <summary>
+        /// The alpha component of this Color4 structure.
+        /// </summary>
+        public readonly float A;
+
+        #endregion
+
+        #region Constructors
+
+        /// <summary>
+        /// Constructs a new Color4 structure from the specified components.
+        /// </summary>
+        /// <param name="r">The red component of the new Color4 structure.</param>
+        /// <param name="g">The green component of the new Color4 structure.</param>
+        /// <param name="b">The blue component of the new Color4 structure.</param>
+        /// <param name="a">The alpha component of the new Color4 structure.</param>
+        public Color4(float r, float g, float b, float a)
+        {
+            R = r;
+            G = g;
+            B = b;
+            A = a;
+        }
+
+        /// <summary>
+        /// Constructs a new Color4 structure from the specified System.Drawing.Color.
+        /// </summary>
+        /// <param name="color">The System.Drawing.Color containing the component values.</param>
+        public Color4(Color color)
+        {
+            R = color.R / (float)Byte.MaxValue;
+            G = color.G / (float)Byte.MaxValue;
+            B = color.B / (float)Byte.MaxValue;
+            A = color.A / (float)Byte.MaxValue;
+        }
+
+        #endregion
+
+        #region Conversions
+
+        /// <summary>
+        /// Converts the specified System.Drawing.Color to a Color4 structure.
+        /// </summary>
+        /// <param name="color">The System.Drawing.Color to convert.</param>
+        /// <returns>A new Color4 structure containing the converted components.</returns>
+        public static implicit operator Color4(Color color)
+        {
+            return new Color4(color);
+        }
+
+        /// <summary>
+        /// Converts the specified Color4 to a System.Drawing.Color structure.
+        /// </summary>
+        /// <param name="color">The Color4 to convert.</param>
+        /// <returns>A new System.Drawing.Color structure containing the converted components.</returns>
+        public static explicit operator Color(Color4 color)
+        {
+            return Color.FromArgb(
+                (int)(color.A * Byte.MaxValue),
+                (int)(color.R * Byte.MaxValue),
+                (int)(color.G * Byte.MaxValue),
+                (int)(color.B * Byte.MaxValue));
+        }
+
+        #endregion
+
+        #region IEquatable<Color4> Members
+
+        /// <summary>
+        /// Compares whether this Color4 structure is equal to the specified Color4.
+        /// </summary>
+        /// <param name="other">The Color4 structure to compare to.</param>
+        /// <returns>True if both Color4 structures contain the same components; false otherwise.</returns>
+        public bool Equals(Color4 other)
+        {
+            return
+                this.R == other.R &&
+                this.G == other.G &&
+                this.B == other.B &&
+                this.A == other.A;
+        }
+
+        #endregion
+
+        #region Overrides
+
+        /// <summary>
+        /// Compares whether this Color4 structure is equal to the specified object.
+        /// </summary>
+        /// <param name="obj">An object to compare to.</param>
+        /// <returns>True obj is a Color4 structure with the same components as this Color4; false otherwise.</returns>
+        public override bool Equals(object obj)
+        {
+            if (!(obj is Color4))
+                return false;
+
+            return Equals((Color4)obj);
+        }
+
+        /// <summary>
+        /// Calculates the hash code for this Color4 structure.
+        /// </summary>
+        /// <returns>A System.Int32 containing the hashcode of this Color4 structure.</returns>
+        public override int GetHashCode()
+        {
+            return ((Color)this).GetHashCode();
+        }
+
+        /// <summary>
+        /// Creates a System.String that describes this Color4 structure.
+        /// </summary>
+        /// <returns>A System.String that describes this Color4 structure.</returns>
+        public override string ToString()
+        {
+            return String.Format("{{R, G, B, A = {0}, {1}, {2}, {3}}}", R.ToString(), G.ToString(), B.ToString(), A.ToString());
+        }
+
+        #endregion
+    }
+}
diff --git a/Source/OpenTK/Graphics/GL/GLHelper.cs b/Source/OpenTK/Graphics/GL/GLHelper.cs
index 3ddb68bd..56a6acd6 100644
--- a/Source/OpenTK/Graphics/GL/GLHelper.cs
+++ b/Source/OpenTK/Graphics/GL/GLHelper.cs
@@ -54,7 +54,7 @@ namespace OpenTK.Graphics
     /// </remarks>
     /// <see href="http://opengl.org/registry/"/>
     /// <seealso cref="GL.SupportsExtension"/>
-    /// <seealso cref="GL.GetDelegate"/>
+    /// <seealso cref="GL.GetDelegate(string)"/>
     /// <seealso cref="GL.LoadAll"/>
     /// <seealso cref="GL.Load"/>
     public static partial class GL
@@ -659,6 +659,34 @@ namespace OpenTK.Graphics
 
         #endregion
 
+        #region public static void Material() overloads
+
+        public static void Materialv(MaterialFace face, MaterialParameter pname, Vector4 @params)
+        {
+            Materialv(face, pname, ref @params.X);
+        }
+
+        public static void Materialv(MaterialFace face, MaterialParameter pname, Color4 @params)
+        {
+            unsafe { GL.Materialv(face, pname, (float*)&@params); }
+        }
+
+        #endregion
+
+        #region public static void Light() overloads
+
+        public static void Lightv(LightName name, LightParameter pname, Vector4 @params)
+        {
+            GL.Lightv(name, pname, ref @params.X);
+        }
+
+        public static void Lightv(LightName name, LightParameter pname, Color4 @params)
+        {
+            unsafe { GL.Lightv(name, pname, (float*)&@params); }
+        }
+
+        #endregion
+
         #region --- Overloads for OpenTK.Math ---
 
         public static void Normal3(Vector3 normal)
@@ -770,14 +798,6 @@ namespace OpenTK.Graphics
 			}
 		}
 
-        public static void Materialv(MaterialFace face, MaterialParameter pname, Vector4 @params)
-        {
-            unsafe
-            {
-                Materialv(face, pname, &@params.X);
-            }
-        }
-
         #endregion
 
         #region public static void ShaderSource(Int32 shader, System.String @string)