using System;

   using System.Linq;

public class Program

{

    public static void Main()

    {

        var fruits = new[]{"Apple", "Banana", "Guava", "Blueberry"}; //key

        var colors = new[]{"Red", "Yellow", "Green", "Blue"};

        var dic = fruits.Zip(colors, (k, v) => new

        {

        k, v

        }

​

        ).ToDictionary(x => x.k, x => x.v);

        foreach (var fruit in fruits)

        {

            Console.WriteLine(fruit + ":" + dic[fruit]);

        }

    }

}