Examine source code of The Amazing Spider-Man 2

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "The Amazing Spider-Man 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 61, 153)",
      "toolbar_text": "rgb(252, 42, 86)",
      "frame": "rgb(166, 3, 37)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 61, 153)",
      "tab_line": "rgb(166, 3, 37)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 61, 153)",
      "ntp_background": "rgb(200, 0, 42)",
      "tab_loading": "rgb(166, 3, 37)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6ace0b0-9a97-4116-8415-65faf945e033}"
    }
  }
}