Examine source code of Swimming Pool

{
  "theme": {
    "images": {
      "theme_frame": "JOY_STRIP1.JPG"
    },
    "colors": {
      "frame": "#4a4646",
      "tab_background_text": "#d99307"
    }
  },
  "version": "2.0",
  "name": "Swimming Pool",
  "manifest_version": 2,
  "description": "It's Summer!! , lets go swimming, YAY!!"
}