using System;

using System.Drawing;

public class Program

{

    public static void Main()

    {

        Color colorA = Color.FromArgb(128,128,128);

        Color colorB = Color.FromArgb(130,120,128);

        const int threshold = 0x10;

        const int thresholdDiff = threshold / 3 + threshold % 3;

        int[] diff = new [] 

        {

            colorA.R - colorB.R,

            colorA.G - colorB.G,

            colorA.B - colorB.B,

            colorA.R - colorB.R +

            colorA.G - colorB.G +

            colorA.B - colorB.B

        };

        Console.WriteLine(threshold + " -> " + thresholdDiff);

        Console.WriteLine("{0},{1},{2} -> {3}", diff[0],diff[1],diff[2],diff[3]);

        int[] diff2 = new [] 

        {

            colorA.R + thresholdDiff,

            colorA.G + thresholdDiff,

            colorA.B + thresholdDiff,

        };

        Console.WriteLine("{0},{1},{2}", diff2[0],diff2[1],diff2[2]);

    }

}