golang encoding/json

 package main

 import (
     "bytes"
     "encoding/json"
     "fmt"
 )

 type ColorGroup struct {
     ID     int
     Name   string
     Colors []string
 }

 func main() {

     //---------------Marshal
     group := ColorGroup{
         ID:     ,
         Name:   "Reds",
         Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
     }
     b, err := json.Marshal(group)
     if err != nil {
         fmt.Println("error:", err)
     }
     //os.Stdout.Write(b)
     fmt.Println(string(b[:]))

     //---------------Unmarshal
     var jsonBlob = []byte(`[
             {"ID":,"Name":"Reds1","Colors":["Crimson","Red1","Ruby1","Maroon1"]},
             {"ID":,"Name":"Reds2","Colors":["Crimson","Red2","Ruby2","Maroon2"]},
             {"ID":,"Name":"Reds3","Colors":["Crimson","Red3","Ruby3","Maroon3"]}
         ]`)

     var animals []ColorGroup
     error := json.Unmarshal(jsonBlob, &animals)
     if error != nil {
         fmt.Println("error:", error)
     }

     //fmt.Printf("%+v", animals)
     //fmt.Println(animals)
     for i, x := range animals {
         fmt.Println(i, x)

     }
     //---------------Indent
     dst := new(bytes.Buffer)
     json.Indent(dst, jsonBlob, "##", "**")
     fmt.Println(dst)
 }