Examine source code of Disneys Frozen

{
  "theme": {
    "images": {
      "theme_frame": "Frozen2FirefoxHeader.png"
    },
    "colors": {
      "frame": "#00284f",
      "tab_background_text": "#cceaff"
    }
  },
  "version": "2.0",
  "name": "Disneys Frozen",
  "manifest_version": 2,
  "description": "Anna and Kristoff from Disney's Frozen, based on The Snow Queen"
}