using System;

public class Program

{

    public static void Main()

    {

        var color = new string[4];

        color[0] = "blue"; // Sky or Berry

        color[1] = "green"; // Grass or Cheeks?

        color[2] = "purple"; // Lemon or Grape?

        color[3] = "black"; // As the Night or As Jack?

        var questions = new string[4];

        questions[0] = "Sky or Berry";

        questions[1] = "Grass or Cheeks?";

        questions[2] = "Lemon or Grape?";

        questions[3] = "As the Night or As Jack?";

        var input = "yellow";

        var foundColorIndex = -1;

        for (var index = 0; index < color.Length; index = index + 1) {

            if (input == color[index]) {

                foundColorIndex = index;

            }

        }

        // comparison operators

        // == equals

        // != not equals

        // > greater than

        // < less than

        // >= greater than or equal to

        // <= less than or equal to

        if (foundColorIndex != -1) {

            Console.WriteLine(questions[foundColorIndex]);

        }

        else {

            Console.WriteLine("Um, that's not a color...");

        }

    }

}