Examine source code of Secretariat

{
  "theme": {
    "images": {
      "theme_frame": "Secretariat.jpg"
    },
    "colors": {
      "frame": "#0a0000",
      "tab_background_text": "#e8f71b"
    }
  },
  "version": "2.0",
  "name": "Secretariat",
  "manifest_version": 2,
  "description": "He was awesome in my girlhood & the movie is awesome now.\n\nTAGS:\n     Horses, Triple Crown, Racing, Horse Racing, Movies, Animals, Mammals, Jockeys, Sports"
}