Examine source code of "Once Upon a Time"

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0a0404",
      "tab_background_text": "#d17d23"
    }
  },
  "version": "2.0",
  "name": "\"Once Upon a Time\"",
  "manifest_version": 2,
  "description": "From the TV show \"Once Upon a Time\". Don't eat the apple, it's poison!"
}