Colorful serialization

I was writing some code to serialize a C# class to JSON and needed to export a System.Drawing.Color field as a hex string. Thankfully it's easy to customize the output using Json.NET. I created the following custom converter to save colors as hex strings (like #FFF0B6)

public class ColorHexConverter : JsonConverter {    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) {   var color = (Color)value;   var hexString = color.IsEmpty ? string.Empty : string.Concat("#", (color.ToArgb() & 0x00FFFFFF).ToString("X6");   writer.WriteValue(hexString);  }    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) {   var hexString = reader.Value.ToString();   if (hexString == null || !hexString.StartsWith("#")) return Color.Empty;   return ColorTranslator.FromHtml(hexString);  }    public override bool CanConvert(Type objectType) {   return objectType == typeof(Color);  } }

And example usage:

[JsonConverter(typeof(ColorHexConverter))] public Color BackgroundColor;