diff --git a/AssetStudio/Classes/Material.cs b/AssetStudio/Classes/Material.cs
index 4569d52..9d444f3 100644
--- a/AssetStudio/Classes/Material.cs
+++ b/AssetStudio/Classes/Material.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using Newtonsoft.Json;
+using System.Collections.Generic;
 
 namespace AssetStudio
 {
@@ -22,9 +23,13 @@ namespace AssetStudio
 
     public class UnityPropertySheet
     {
+        [JsonConverter(typeof(KVPConverter<UnityTexEnv>))]
         public List<KeyValuePair<string, UnityTexEnv>> m_TexEnvs;
+        [JsonConverter(typeof(KVPConverter<int>))]
         public List<KeyValuePair<string, int>> m_Ints;
+        [JsonConverter(typeof(KVPConverter<float>))]
         public List<KeyValuePair<string, float>> m_Floats;
+        [JsonConverter(typeof(KVPConverter<Color>))]
         public List<KeyValuePair<string, Color>> m_Colors;
 
         public UnityPropertySheet(ObjectReader reader)
diff --git a/AssetStudio/Helpers/KVPConverter.cs b/AssetStudio/Helpers/KVPConverter.cs
new file mode 100644
index 0000000..ab1120a
--- /dev/null
+++ b/AssetStudio/Helpers/KVPConverter.cs
@@ -0,0 +1,35 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace AssetStudio;
+public class KVPConverter<T> : JsonConverter
+{
+    public KVPConverter() : base() { }
+
+    public override bool CanConvert(Type objectType)
+    {
+        throw new NotImplementedException();
+    }
+
+    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+    {
+        throw new NotImplementedException();
+    }
+
+    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+    {
+        var list = (IList)value;
+        writer.WriteStartObject();
+        foreach (var val in list)
+        {
+            if (val is KeyValuePair<string, T> kvp)
+            {
+                writer.WritePropertyName(kvp.Key.ToString());
+                serializer.Serialize(writer, kvp.Value);
+            }
+        }
+        writer.WriteEndObject();
+    }
+}