Dragon Army-Dictionaries with Class

using System;
using System.Linq;
using System.Collections.Generic;


public class Program
{
	public class Dragon
	{
		public string Color {get; set;}
		public string Name {get; set;}
		public int Damage {get; set;}
		public int Health {get; set;}
		public int Armor {get; set;}
	}
	public static void Main()
	{
		List<Dragon> dragons = new List<Dragon>();
		List<string> colors = new List<string>();

		int n = int.Parse(Console.ReadLine());

		for (int i=0; i<n; i++)
		{
			string[] tokens = Console.ReadLine().Split();
			string color = tokens[0];
			string name = tokens[1];
			string damage = tokens[2];
			int dmg =0;
			if (damage == "null")
			{
				 dmg =45;
			}
			else
			{
				dmg = int.Parse(damage);
			}
			string health = tokens[3];
			int hp =0;
			if (health == "null")
			{
				hp = 250;
			}
			else
			{
				hp = int.Parse(health);
			}
			string defense = tokens[4];
			int armor =0;
			if (defense == "null")
			{
				armor = 10;
			}
			else
			{
				armor = int.Parse(defense);
			}

			Dragon dragon = dragons.FirstOrDefault(d=>d.Color==color && d.Name == name);

			if (dragon == null)
			{
				dragons.Add(new Dragon
				{
					Color = color,
					Name = name,
					Damage = dmg,
					Health = hp,
					Armor = armor
				});

				colors.Add(color);
			}
			else
			{
				dragon.Damage = dmg;
				dragon.Health = hp;
				dragon.Armor = armor;
			}
		}

		colors = colors.Distinct().ToList();

		foreach (var currColor in colors)
		{
			var dragonsStats = dragons.Where(x=>x.Color == currColor).OrderBy(x=>x.Name);
			var avrDmg = dragonsStats.Average(x=>x.Damage);
			var avrHp = dragonsStats.Average(x=>x.Health);
			var avrArmor = dragonsStats.Average(x=>x.Armor);
			Console.WriteLine("{0}::({1:f2}/{2:f2}/{3:f2})",currColor,avrDmg,avrHp,avrArmor);

			foreach (var currDragon in dragonsStats)
			{
				Console.WriteLine("-{0} -> damage: {1}, health: {2}, armor: {3}",currDragon.Name,currDragon.Damage,currDragon.Health,currDragon.Armor);
			}
		}
	}
}