Examine source code of Fleetwood Mac 1976

{
  "theme": {
    "images": {
      "theme_frame": "HeaderFMBlue.jpg"
    },
    "colors": {
      "frame": "#160f4a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fleetwood Mac 1976",
  "manifest_version": 2,
  "description": "Fleetwood Mac at the height of their fame."
}