Examine source code of DeepDesert

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "DeepDesert",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.98)",
      "toolbar_text": "rgb(184, 184, 184)",
      "frame": "rgb(60, 55, 44)",
      "tab_background_text": "rgb(172, 172, 172)",
      "toolbar_field": "rgba(28, 28, 28, 0.73)",
      "toolbar_field_text": "rgb(109, 109, 109)",
      "tab_line": "rgba(183, 189, 248, 0)",
      "popup": "rgb(52, 52, 52)",
      "popup_text": "rgb(240, 240, 240)",
      "button_background_active": "rgb(127, 127, 127)",
      "frame_inactive": "rgb(96, 96, 96)",
      "icons_attention": "rgb(241, 241, 241)",
      "icons": "rgb(170, 170, 170)",
      "ntp_background": "rgb(0, 0, 0)",
      "ntp_text": "rgb(222, 222, 222)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight_text": "rgb(240, 240, 240)",
      "popup_highlight": "rgb(149, 149, 149)",
      "sidebar_border": "rgb(172, 172, 172)",
      "sidebar_highlight_text": "rgb(55, 55, 55)",
      "sidebar_highlight": "rgb(185, 185, 185)",
      "sidebar_text": "rgb(81, 81, 81)",
      "sidebar": "rgb(67, 67, 67)",
      "tab_background_separator": "rgb(204, 204, 204)",
      "tab_loading": "rgb(177, 177, 177)",
      "tab_selected": "rgb(70, 70, 70)",
      "tab_text": "rgb(237, 237, 237)",
      "toolbar_bottom_separator": "rgb(71, 71, 71)",
      "toolbar_field_border_focus": "rgba(60, 55, 44, 0)",
      "toolbar_field_border": "rgb(79, 79, 79)",
      "toolbar_field_focus": "rgb(119, 119, 119)",
      "toolbar_field_highlight_text": "rgb(74, 74, 74)",
      "toolbar_field_highlight": "rgb(207, 207, 207)",
      "toolbar_field_separator": "rgb(222, 222, 222)",
      "toolbar_field_text_focus": "rgb(211, 211, 211)",
      "toolbar_vertical_separator": "rgb(226, 226, 226)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{225f573a-43fd-4462-a500-eb89adc1acf0}"
    }
  }
}