Examine source code of Tor

{
  "manifest_version": 2,
  "version": "0.0.1",
  "name": "Tor Browser",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "Sans titre.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ]
    },
    "colors": {
      "bookmark_text": "rgb(255,255,255)",
      "button_background_active": "rgb(39,0,59)",
      "button_background_hover": "rgb(39,0,59)",
      "frame": "rgb(39,0,59)",
      "frame_inactive": "rgb(39,0,59)",
      "icons": "rgb(255,255,255)",
      "icons_attention": "rgb(255,255,255)",
      "ntp_background": "rgb(66,12,93)",
      "ntp_text": "rgb(245,226,255)",
      "popup": "rgb(39,0,59)",
      "popup_border": "rgb(112,0,167)",
      "popup_highlight": "rgb(66,12,93)",
      "popup_highlight_text": "rgb(232,187,255)",
      "popup_text": "rgb(232,187,255)",
      "sidebar": "rgb(39,0,59)",
      "sidebar_border": "rgb(77,26,103)",
      "sidebar_highlight": "rgb(66,12,93)",
      "sidebar_text": "rgb(255,255,255)",
      "tab_background_separator": "rgb(0,0,0)",
      "tab_background_text": "rgb(186,48,255)",
      "tab_line": "rgb(131,0,196)",
      "tab_loading": "rgb(255,255,255)",
      "tab_selected": "rgb(0,0,0)",
      "tab_text": "rgb(245,226,255)",
      "toolbar": "rgb(66,12,93)",
      "toolbar_top_separator": "rgb(77,26,103)",
      "toolbar_bottom_separator": "rgb(77,26,103)",
      "toolbar_field": "rgb(77,26,103)",
      "toolbar_field_border": "rgb(77,26,103)",
      "toolbar_field_border_focus": "rgb(39,0,59)",
      "toolbar_field_focus": "rgb(39,0,59)",
      "toolbar_field_highlight": "rgb(39,0,59)",
      "toolbar_field_highlight_text": "rgb(255,255,255)",
      "toolbar_field_text": "rgb(232,187,255)",
      "toolbar_field_text_focus": "rgb(255,255,255)",
      "toolbar_field_separator": "rgb(232,187,255)",
      "toolbar_text": "rgb(232,187,255)",
      "toolbar_vertical_separator": "rgb(232,187,255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f36ff447-a2ae-4539-9e64-e69eaeaba094}"
    }
  }
}