Examine source code of Alien Flightdeck

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Alien Flightdeck",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-022-0e8aa16bfcfce2449791412d89f3a92b.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(41, 82, 31)",
      "toolbar_text": "rgb(241, 230, 193)",
      "frame": "rgb(3, 4, 5)",
      "tab_background_text": "rgb(248, 238, 208)",
      "toolbar_field": "rgb(9, 53, 40)",
      "toolbar_field_text": "rgb(250, 239, 243)",
      "tab_line": "rgb(228, 0, 151)",
      "popup": "rgb(52, 15, 68)",
      "popup_text": "rgb(218, 142, 207)",
      "button_background_active": "rgb(132, 2, 86)",
      "button_background_hover": "rgb(3, 41, 68)",
      "frame_inactive": "rgb(137, 135, 136)",
      "icons_attention": "rgb(105, 208, 199)",
      "icons": "rgb(248, 169, 194)",
      "ntp_background": "rgb(52, 88, 150)",
      "ntp_text": "rgb(250, 213, 225)",
      "popup_border": "rgb(41, 82, 31)",
      "popup_highlight_text": "rgb(236, 255, 209)",
      "popup_highlight": "rgb(58, 150, 64)",
      "sidebar_border": "rgb(3, 2, 3)",
      "sidebar_highlight_text": "rgb(245, 203, 250)",
      "sidebar_highlight": "rgb(196, 67, 4)",
      "sidebar_text": "rgb(127, 170, 127)",
      "sidebar": "rgb(38, 23, 26)",
      "tab_background_separator": "rgb(97, 4, 4)",
      "tab_loading": "rgb(20, 102, 92)",
      "tab_selected": "rgb(37, 12, 39)",
      "tab_text": "rgb(254, 249, 200)",
      "toolbar_bottom_separator": "rgb(41, 82, 31)",
      "toolbar_field_border_focus": "rgb(128, 212, 107)",
      "toolbar_field_border": "rgb(117, 192, 2)",
      "toolbar_field_focus": "rgb(46, 116, 110)",
      "toolbar_field_highlight_text": "rgb(232, 248, 208)",
      "toolbar_field_highlight": "rgb(228, 0, 151)",
      "toolbar_field_separator": "rgb(41, 82, 31)",
      "toolbar_field_text_focus": "rgb(245, 203, 250)",
      "toolbar_top_separator": "rgb(41, 82, 31)",
      "toolbar_vertical_separator": "rgb(41, 82, 31)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4d99c546-648c-428a-85ad-c94737ca0c6c}"
    }
  }
}