Examine source code of morbid

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "morbid0923",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(202, 175, 35, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(15, 130, 127)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(121, 27, 27, 0.91)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(37, 105, 103)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(188, 41, 23, 0.88)",
      "button_background_hover": "rgb(17, 115, 115)",
      "ntp_background": "rgba(221, 213, 218, 0.18)",
      "popup_border": "rgb(157, 47, 33)",
      "popup_highlight": "rgba(100, 27, 27, 0.91)",
      "sidebar_border": "rgba(151, 46, 33, 0.91)",
      "sidebar_highlight": "rgba(136, 41, 29, 0.72)",
      "sidebar": "rgb(26, 53, 56)",
      "tab_loading": "rgba(76, 91, 91, 0.5)",
      "tab_selected": "rgba(187, 25, 25, 0.77)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_border_focus": "rgba(255, 255, 255, 0.72)",
      "toolbar_field_border": "rgb(47, 185, 191)",
      "toolbar_field_focus": "rgba(173, 26, 26, 0.84)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(67, 67, 65)",
      "toolbar_field_separator": "rgba(255, 241, 0, 0)",
      "toolbar_field_text_focus": "rgba(255, 241, 0, 0)",
      "toolbar_top_separator": "rgba(255, 241, 0, 0)",
      "toolbar_vertical_separator": "rgba(255, 241, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb12a215-d403-48b2-ae9c-2e79810d79d2}"
    }
  }
}