Examine source code of Indigo Blues

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Indigo Blues",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(57, 60, 107)",
      "toolbar_text": "rgb(157, 159, 255)",
      "frame": "rgb(3, 11, 67)",
      "tab_background_text": "rgb(158, 162, 234)",
      "toolbar_field": "rgb(21, 26, 77)",
      "toolbar_field_text": "rgb(160, 162, 241)",
      "tab_line": "rgb(85, 73, 149)",
      "popup": "rgb(37, 40, 81)",
      "popup_text": "rgb(177, 180, 240)",
      "button_background_active": "rgb(41, 47, 87)",
      "button_background_hover": "rgb(76, 82, 135)",
      "frame_inactive": "rgb(2, 2, 56)",
      "icons_attention": "rgb(125, 138, 223)",
      "icons": "rgb(167, 176, 249)",
      "ntp_background": "rgb(23, 29, 83)",
      "ntp_text": "rgb(126, 134, 200)",
      "popup_border": "rgb(47, 52, 91)",
      "popup_highlight_text": "rgb(180, 189, 248)",
      "popup_highlight": "rgb(38, 49, 106)",
      "sidebar_border": "rgb(48, 56, 116)",
      "sidebar_highlight_text": "rgb(193, 200, 254)",
      "sidebar_highlight": "rgb(63, 71, 135)",
      "sidebar_text": "rgb(123, 129, 177)",
      "sidebar": "rgb(23, 28, 68)",
      "tab_background_separator": "rgb(57, 65, 118)",
      "tab_loading": "rgb(182, 184, 241)",
      "tab_selected": "rgb(27, 36, 93)",
      "tab_text": "rgb(141, 145, 219)",
      "toolbar_bottom_separator": "rgb(71, 79, 128)",
      "toolbar_field_border_focus": "rgb(40, 47, 85)",
      "toolbar_field_border": "rgb(72, 78, 136)",
      "toolbar_field_focus": "rgb(14, 21, 64)",
      "toolbar_field_highlight_text": "rgb(174, 184, 244)",
      "toolbar_field_highlight": "rgb(59, 72, 143)",
      "toolbar_field_separator": "rgb(46, 54, 102)",
      "toolbar_field_text_focus": "rgb(145, 158, 237)",
      "toolbar_top_separator": "rgb(68, 77, 136)",
      "toolbar_vertical_separator": "rgb(121, 136, 216)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{29e422fe-7d78-4056-b20d-90919b7f4637}"
    }
  }
}