Examine source code of Dog Agility

{
  "theme": {
    "images": {
      "theme_frame": "background_agility_dogs.png"
    },
    "colors": {
      "frame": "#008000",
      "tab_background_text": "#ffe438"
    }
  },
  "version": "2.0",
  "name": "Dog Agility",
  "manifest_version": 2,
  "description": "Dog Fun Agility"
}