Examine source code of kittens in gallery

{
  "theme": {
    "images": {
      "theme_frame": "kittensingalleryalto.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#ffff66"
    }
  },
  "version": "2.0",
  "name": "kittens in gallery",
  "manifest_version": 2,
  "description": "nature,cats,green,eyes,eye,tabby,paws,tail,furry,pets,cute,sweet,soft,lazy,\ncandelora"
}