Bomberman/Assets/Scripts/Lobby.cs

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
using Random = UnityEngine.Random;

public class Lobby : MonoBehaviour {
	[SerializeField] List<Player> players;

	void Awake() => players = new List<Player>();

	public void OnPlayerJoined(PlayerInput playerInput) {
		playerInput.transform.parent = transform;

		players.Add(playerInput.GetComponent<Player>());
		
		playerInput.gameObject.name = "Player " + players.Count;
		Debug.Log(playerInput.gameObject.name + " joined!");

		var color = Random.ColorHSV(0, 1, 0.8f, 1, 0.8f, 1);
		playerInput.GetComponent<Renderer>().material
			.color = color;
		
		float h, s, v;
		Color.RGBToHSV(color, out h, out s, out v);
		playerInput.transform.GetChild(0).GetComponent<Renderer>().material
			.color = Color.HSVToRGB((h - 0.05f) % 1f, s + 0.05f, v - 0.1f);

	}

	public void OnPlayerLeft(PlayerInput playerInput)
		=> Debug.Log(playerInput.gameObject.name + " left :O");
}