Examine source code of Bastard Dark fantasy

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "bastard",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgba(255, 255, 255, 0.99)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(169, 169, 169)",
      "toolbar_field": "rgba(0, 0, 0, 0.32)",
      "toolbar_field_text": "rgb(244, 59, 59)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgba(62, 0, 0, 0.89)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgba(42, 0, 74, 0.6)",
      "icons_attention": "rgb(134, 0, 192)",
      "ntp_background": "rgb(0, 0, 0)",
      "popup_border": "rgba(91, 77, 162, 0)",
      "popup_highlight": "rgba(83, 73, 135, 0)",
      "sidebar_highlight_text": "rgba(39, 33, 67, 0)",
      "sidebar_text": "rgba(47, 40, 81, 0)",
      "tab_selected": "rgba(73, 0, 93, 0.57)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_focus": "rgba(255, 255, 255, 0.53)",
      "toolbar_field_highlight": "rgba(0, 0, 0, 0)",
      "toolbar_field_text_focus": "rgba(0, 0, 0, 0)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "toolbar_vertical_separator": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgba(255, 255, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1036fb47-0208-4efc-b5ab-7e8ede58eb35}"
    }
  }
}