Get property in inerrited class

Question

I'm trying to get the property from an inherited class without creating a new instance and rather use the parameter being passed in the method.

 

How can I get the property Color over here? 
 

Does not work:

public void InitPlay(Toy toy)
{
    Console.WriteLine($" The {TypeOfAnimal}{Name} is now playing with the {toy.Color} {toy} ");
}

Works:
This one works. But that's just because I created a new object of class Ball. But the point of passing in toy is thus redundant. 

public void InitPlay(Toy toy)
{
   Ball ball = new Ball();
   Console.WriteLine($" The {TypeOfAnimal}{Name} is now playing with the {ball.Color} {toy} ");
}

 

 Rest of the code (if needed)

class Ball : Toy
{
    public string Color { get; set; }
}

abstract class Toy
    {
     ...
     }