Examine source code of lightorange on black

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Orange",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(8, 7, 8)",
      "toolbar_text": "rgb(251, 254, 249)",
      "frame": "rgb(8, 7, 8)",
      "tab_background_text": "rgb(251, 254, 249)",
      "toolbar_field": "rgb(8, 7, 8)",
      "toolbar_field_text": "rgb(251, 254, 249)",
      "tab_line": "rgb(173, 94, 82)",
      "popup": "rgb(8, 7, 8)",
      "popup_text": "rgb(251, 254, 249)",
      "button_background_active": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(173, 94, 82)",
      "frame_inactive": "rgb(8, 7, 8)",
      "icons_attention": "rgb(251, 254, 249)",
      "icons": "rgb(251, 254, 249)",
      "ntp_background": "rgb(173, 94, 82)",
      "ntp_text": "rgb(0, 0, 0)",
      "popup_border": "rgb(8, 7, 8)",
      "popup_highlight_text": "rgb(251, 254, 249)",
      "popup_highlight": "rgb(173, 94, 82)",
      "sidebar_border": "rgb(255, 0, 4)",
      "sidebar_highlight_text": "rgb(255, 0, 4)",
      "sidebar_highlight": "rgb(255, 0, 4)",
      "sidebar_text": "rgb(255, 0, 4)",
      "sidebar": "rgb(255, 0, 4)",
      "tab_background_separator": "rgb(8, 7, 8)",
      "tab_loading": "rgb(8, 7, 8)",
      "tab_selected": "rgb(8, 7, 8)",
      "tab_text": "rgb(251, 254, 249)",
      "toolbar_bottom_separator": "rgb(8, 7, 8)",
      "toolbar_field_border_focus": "rgb(173, 94, 82)",
      "toolbar_field_border": "rgb(8, 7, 8)",
      "toolbar_field_focus": "rgb(8, 7, 8)",
      "toolbar_field_highlight_text": "rgb(8, 7, 8)",
      "toolbar_field_highlight": "rgb(251, 254, 249)",
      "toolbar_field_separator": "rgb(173, 94, 82)",
      "toolbar_field_text_focus": "rgb(251, 254, 249)",
      "toolbar_top_separator": "rgb(8, 7, 8)",
      "toolbar_vertical_separator": "rgb(173, 94, 82)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1d0783c-ac8f-4e46-abbe-a87aa08213e0}"
    }
  }
}