Examine source code of Silverfox Beta

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Silverfox Beta",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.51)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(109, 158, 179)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(248, 112, 140, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_selected": "rgba(255, 255, 255, 0.52)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgba(67, 120, 139, 0)",
      "tab_loading": "rgba(248, 112, 140, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c26020d6-4d82-40ce-a4ad-cd4dcbde92b7}"
    }
  }
}