Examine source code of Beautiful Manjaro Dark

{
  "manifest_version": 2,
  "version": "4.3",
  "name": "Beautiful Manjaro Dark",
  "author": "GODIE",
  "description": "Tema Oscuro con Tonos Verdes Agradables al Estilo Manjaro Linux.",
  "icons": {
    "32": "icon-32.png"
  },
  "theme": {
    "colors": {
      "frame": "#101113",
      "tab_background_text": "#b3b3b3",
      "frame_inactive": "#161719",
      "toolbar": "#2d3134",
      "toolbar_field": "#202328",
      "toolbar_field_text": "#e2e9e9",
      "toolbar_top_separator": "#0a0a0a",
      "toolbar_bottom_separator": "#1c1c1c",
      "bookmark_text": "#b3d9ff",
      "toolbar_field_border": "#1c1f22",
      "toolbar_field_focus": "#1c1f22FC",
      "toolbar_field_border_focus": "#2c5d54",
      "toolbar_field_highlight": "#027e65",
      "toolbar_field_highlight_text": "#eaeaea",
      "toolbar_field_text_focus": "#e5e5e6",
      "toolbar_vertical_separator": "#323639",
      "button_background_hover": "#212426",
      "button_background_active": "#181a1b",
      "icons": "#05c7a0",
      "icons_attention": "#05b694",
      "ntp_background": "#23272a",
      "ntp_text": "#b5daca",
      "ntp_card_background": "#313538",
      "popup": "#24272a",
      "popup_text": "#e2e9e9",
      "popup_border": "#2f6a6280",
      "popup_highlight": "#027e65",
      "sidebar": "#202325",
      "sidebar_text": "#c3c3c3",
      "sidebar_border": "#11090a",
      "sidebar_highlight": "#202124",
      "sidebar_highlight_text": "#03fcca",
      "tab_line": "#2d3134",
      "tab_selected": "#2d3134",
      "tab_loading": "#02af8c",
      "tab_loading_inactive": "#02af8c",
      "tab_background_separator": "#54575f",
      "tab_text": "#eaeaea"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f07f0b4d-dfc9-484b-9f63-65d66b7b117c}"
    }
  }
}