Examine source code of Felix the cat

{
  "theme": {
    "images": {
      "theme_frame": "felixheader.JPG"
    },
    "colors": {
      "frame": "#293cba",
      "tab_background_text": "#f7f43b"
    }
  },
  "version": "2.0",
  "name": "Felix the cat",
  "manifest_version": 2,
  "description": "Felix cats cartoon animation nostalgy"
}