Examine source code of A Cat...

{
  "theme": {
    "images": {
      "theme_frame": "IEF.JPG"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#e0c4ff"
    }
  },
  "version": "2.0",
  "name": "A Cat...",
  "manifest_version": 2,
  "description": "A cat who's walk on the snow!"
}