server/AyaNova/DataList/DataListFetcher.cs

@@ -194,7 +194,7 @@ namespace AyaNova.DataList
                                     {
                                         var ordinal = SelectBuild.map[f.SqlColorColumnName];
                                         if (!await dr.IsDBNullAsync(ordinal))
-                                            AyaField.clr = dr.GetInt32(ordinal);
+                                            AyaField.clr = dr.GetString(ordinal);
                                     }
 
                                     row.Add(AyaField);

server/AyaNova/biz/AyaFieldData.cs

@@ -16,6 +16,6 @@ namespace AyaNova.Biz
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]  //https://www.newtonsoft.com/json/help/html/JsonPropertyPropertyLevelSetting.htm
         public int? ot { get; set; }//openable type
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]  //https://www.newtonsoft.com/json/help/html/JsonPropertyPropertyLevelSetting.htm
-        public int? clr { get; set; }//color
+        public string clr { get; set; }//color
     }
 }