How to spawn an object using the FlyWeight Pattern - unity3d

Question

So I've been setting up this test to implement the flyweight pattern. It's where I create an object class and a factory to basically spawn the same kind of object with different properties, in this case, color, size, and shape. So I have a dropdown menu for each property and a button to create the object. I want to use the getobject function in the factory class to create the object, but I can't seem to create it right. I got the shape, but not the color or size. It has something to do with the parameters I set up for the function. I don't want to just do what I'm doing right now to spawn cubes and cylinders. That's just a test. If anyone could come up with a way around this, I appreciate it thank you.
public class FlyWeight : MonoBehaviour
{
public Button CreateButton;
List<string> colors = new List<string>() { "Choose Color", "Red", "Blue", "Green" };
List<string> shapes = new List<string>() { "Choose Shape", "Sphere", "Cube", "Cylinder" };
List<string> sizes = new List<string>() { "Choose Size", "Small", "Medium", "Large" };
public Dropdown Shapes;
public Dropdown Colors;
public Dropdown Sizes;
private void Start()
{
Button button = CreateButton.GetComponent<Button>();
Shapes.AddOptions(shapes);
Colors.AddOptions(colors);
Sizes.AddOptions(sizes);
}
public void TaskOnClick()
{
if (Shapes.value == 1)
{
var sphere= Factory.getObject(GameObject.CreatePrimitive(PrimitiveType.Sphere), getSize(), getColor());
}
else if (Shapes.value == 2)
{
var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube.GetComponent<Renderer>().material.color = getColor();
cube.transform.localScale = getSize();
}
else if (Shapes.value == 3)
{
var cylinder = GameObject.CreatePrimitive(PrimitiveType.Cylinder);
cylinder.GetComponent<Renderer>().material.color = getColor();
cylinder.transform.localScale = getSize();
}
}
public Color getColor()
{
if (Colors.value == 1) { return Color.red; }
else if (Colors.value == 2) { return Color.blue; }
else if (Colors.value == 3) { return Color.green; }
else return Color.white;
}
public Vector3 getSize()
{
if (Sizes.value == 1) { return gameObject.transform.localScale = new Vector3(1, 1, 1); }
else if (Sizes.value == 2) { return gameObject.transform.localScale = new Vector3(2, 2, 2); }
else { return gameObject.transform.localScale = new Vector3(3, 3, 3); }
}
}
Object Class
public class Object
{
private Color color;
private Vector3 size;
private GameObject shape;
private int x, y;
public Object (GameObject shape, Vector3 size,Color color)
{
this.color = color;
this.size = size;
this.shape = shape;
}
public void setX(int x) { this.x = x; }
public void setY(int y) { this.y = y; }
}
Factory Class
public class Factory
{
private static List<Object> objects = new List<Object>();
public static Object getObject(GameObject shape,Vector3 size, Color color)
{
Object obj = null;
if (obj == null)
{
obj = new Object(shape, size, color);
objects.Add(obj);
}
return obj;
}
}