Merge branch 'master' of https://github.com/Bunny83/SimpleJSON into master

Author: Bunny83

SimpleJSON.cs

@@ -363,7 +363,7 @@ public virtual JSONObject AsObject
 
         public static implicit operator JSONNode(string s)
         {
-            return new JSONString(s);
+            return (s is null) ? (JSONNode) JSONNull.CreateOrGet() : new JSONString(s);
         }
         public static implicit operator string(JSONNode d)
         {

SimpleJSONUnity.cs

@@ -263,7 +263,7 @@ public Color ReadColor(Color aDefault)
             if (IsObject)
                 return new Color(this["r"].AsFloat, this["g"].AsFloat, this["b"].AsFloat, HasKey("a")?this["a"].AsFloat:ColorDefaultAlpha);
             if (IsArray)
-                return new Color(this[0].AsFloat, this[1].AsFloat, this[2].AsFloat, (Count>4)?this[3].AsFloat:ColorDefaultAlpha);
+                return new Color(this[0].AsFloat, this[1].AsFloat, this[2].AsFloat, (Count>3)?this[3].AsFloat:ColorDefaultAlpha);
             return aDefault;
         }
         public Color ReadColor()
@@ -296,7 +296,7 @@ public Color32 ReadColor32(Color32 aDefault)
             if (IsObject)
                 return new Color32((byte)this["r"].AsInt, (byte)this["g"].AsInt, (byte)this["b"].AsInt, (byte)(HasKey("a")?this["a"].AsInt:Color32DefaultAlpha));
             if (IsArray)
-                return new Color32((byte)this[0].AsInt, (byte)this[1].AsInt, (byte)this[2].AsInt, (byte)((Count>4)?this[3].AsInt:Color32DefaultAlpha));
+                return new Color32((byte)this[0].AsInt, (byte)this[1].AsInt, (byte)this[2].AsInt, (byte)((Count>3)?this[3].AsInt:Color32DefaultAlpha));
             return aDefault;
         }
         public Color32 ReadColor32()