Examine source code of Monster Mango Loco

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Monster Mango Loco",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(90, 187, 255)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(254, 196, 89)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 196, 93)",
      "toolbar_field_text": "rgb(253, 254, 255)",
      "tab_line": "rgb(227, 53, 46)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(219, 56, 49)",
      "sidebar_highlight": "rgb(251, 135, 126)",
      "tab_background_separator": "rgb(149, 19, 9)",
      "tab_selected": "rgb(193, 61, 56)",
      "tab_loading": "rgb(227, 53, 46)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9cddd146-9621-4de7-93ca-f3bf78bbb83e}"
    }
  }
}