Examine source code of Cat Named Tiger

{
  "theme": {
    "images": {
      "theme_frame": "TigerPersona6.JPG"
    },
    "colors": {
      "frame": "#d6921c",
      "tab_background_text": "#faf7f7"
    }
  },
  "version": "2.0",
  "name": "Cat Named Tiger",
  "manifest_version": 2,
  "description": "This is my beautiful cat Tiger."
}