Examine source code of peppermint mathematics

{
  "theme": {
    "images": {
      "theme_frame": "sdfafd.JPG"
    },
    "colors": {
      "frame": "#f2b968",
      "tab_background_text": "#ff8800"
    }
  },
  "version": "2.0",
  "name": "peppermint mathematics",
  "manifest_version": 2,
  "description": "peppermint patty"
}