fCraft.Drawing.BlockPalette.ColorDifference C# (CSharp) Method

        static double ColorDifference( LabColor color1, LabColor color2 )
        {
            return
                Math.Sqrt( (color2.L - color1.L)*(color2.L - color1.L)*1.2 +
                           (color2.a - color1.a)*(color2.a - color1.a) +
                           (color2.b - color1.b)*(color2.b - color1.b) );
        }