How to add table my join tables? ASP.NET MVC

Question

My question is, inside my join of IDs, is it possible to add another column with an ID? This is what I am trying to do:

My Index:

var orders= db.Orders.ToList();
var colers = db.Colors.ToList();
var result = (from c in orders
             join st in colers on c.ID_Orders equals st.id into table1
             select new OrderWithColorsViewModel { order =c, colers = table1.ToList() 
}).ToList();

return View(result);

My classes:

public partial class Orders
{
    public int ID_Orders { get; set; }
    public Nullable<System.DateTime> Data_Registo { get; set; }
    public string Num_Encomenda { get; set; }
    public string Ref_Cliente { get; set; }
}

public partial class Colors
{
    public int ID_Orders { get; set; }
    public int ID_Line_Color { get; set; }
    public string Color{ get; set; }
}

public partial class Quantities
{
    public int ID_Orders { get; set; }
    public int ID_Line_Color { get; set; }
    public int quantity{ get; set; }
}

Of what I am learning right now I have this from my join:

and:

But what I want (I think):

If i am wrong in thinking, correct me, thanks

Answer 1

I leave my solution here for those who need it

var result1 = (from o in order
               join c in coler
                  on o.ID_Programa equals c.ID_Programa into co
               group new { o, co } by o.ID_Programa into g
               from i in g
               select new { order = i.o, colors = i.co }).ToList();
var result2 = (from r1 in result1
               from c in r1.colors
               join q in quant
                 on new { orderId = c.ID_Programa, colorlineId = c.ID_Linha_Cor } equals new { orderId = q.ID_Programa, colorlineId = q.ID_Linha_Cor } into p1
               from p in p1
               join s in statu
                 on new { orderId = p.ID_Programa, colorlineId = p.ID_Linha_Cor } equals new { orderId = s.ID_Programa, colorlineId = s.ID_Linha_Cor } into q
               group new ColorsAndQuantities { coler = c, quant = p1.ToList(), status = q.ToList() } by c.ID_Programa).ToList();
var result = (from r1 in result1
              join m in fabric
                on r1.order.ID_Programa equals m.ID_Programa into t
                from t1 in t
              join r2 in result2
                 on t1.ID_Programa equals r2.Key
              select new OrdersColorsViewModel
              {
                  order = r1.order,
                  malhas = t1,
                  colers = r2.ToList()
              }).ToList();