Examine source code of lovely friends

{
  "theme": {
    "images": {
      "theme_frame": "newperson.jpg"
    },
    "colors": {
      "frame": "#ecf7ac",
      "tab_background_text": "#12540e"
    }
  },
  "version": "2.0",
  "name": "lovely friends",
  "manifest_version": 2,
  "description": "from simsima katora to lovely friends"
}