using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var json = GetJson();

        var obj = JsonConvert.DeserializeObject<RootObject>(json,

            new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });

        Console.WriteLine(JsonConvert.SerializeObject(obj, Formatting.Indented));

        Console.WriteLine("\nSERIALIZED WITH REFERENCES PRESERVED:\n");

        Console.WriteLine(JsonConvert.SerializeObject(obj, Formatting.Indented,

            new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects }));

    }

    static string GetJson() {

        return @"{

            ""$id"": ""1"",

            ""StyleName"": ""Standard"",

            ""Style"": {

                ""$id"": ""2"",

                ""ShapeStyle"": {

                    ""$id"": ""3"",

                    ""Background"": {

                        ""$id"": ""4"",

                        ""Color"": {

                            ""$id"": ""5"",

                            ""A"": 255,

                            ""R"": 68,

                            ""G"": 84,

                            ""B"": 106

                        }

                    }

                },

                ""RightEndCapsStyle"": {

                    ""$id"": ""6"",

                    ""Background"": {

                        ""$id"": ""7"",

                        ""Color"": {

                            ""$ref"": ""5""

                        }

                    }

                }

            }

        }";

    }

}

​

public class RootObject

{

    public string StyleName { get; set; }

    public StyleRoot Style { get; set; }

}

​

public class StyleRoot

{

    public Style ShapeStyle { get; set; }

    public Style RightEndCapsStyle { get; set; }

}

​

public class Style

{

    public Background Background { get; set; }

}

​

public class Background

{

    public Color Color { get; set; }

}

​

public class Color

{

    public int A { get; set; }

    public int R { get; set; }

    public int G { get; set; }

    public int B { get; set; }

}