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;
Console.WriteLine(threshold + " -> " + thresholdDiff);
Console.WriteLine("{0},{1},{2} -> {3}", diff[0],diff[1],diff[2],diff[3]);
colorA.R + thresholdDiff,
colorA.G + thresholdDiff,
colorA.B + thresholdDiff,
Console.WriteLine("{0},{1},{2}", diff2[0],diff2[1],diff2[2]);