Examine source code of Blue Fox 2.0

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(42, 154, 211)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(42, 154, 211)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 132, 67)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(42, 154, 211)",
      "popup": "rgb(42, 154, 211)",
      "popup_text": "rgb(255, 255, 255)",
      "icons_attention": "rgb(42, 154, 211)",
      "popup_border": "rgb(42, 154, 211)",
      "tab_loading": "rgb(42, 154, 211)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{be94ebd0-b8f4-414b-8f54-cdc972b2479b}"
    }
  }
}