Examine source code of Blood Orange (Dark)

{
  "theme": {
    "colors": {
      "frame": "#1C1619",
      "frame_inactive": "#2B2226",
      "tab_line": "#FF582D",
      "tab_loading": "#FF582D",
      "tab_selected": "#2B2226",
      "tab_text": "#D7CDCD",
      "tab_background_text": "#D7CDCD",
      "tab_background_separator": "#2B2226",
      "toolbar": "#1C1619",
      "toolbar_text": "#D7CDCD",
      "toolbar_bottom_separator": "#1C1619",
      "toolbar_field": "#050404",
      "toolbar_field_border": "050404",
      "toolbar_field_focus": "#050404",
      "toolbar_field_text": "#ECE7E4",
      "toolbar_field_separator": "#ECE7E4",
      "toolbar_field_border_focus": "#544b4A",
      "toolbar_top_separator": "#302928",
      "toolbar_vertical_separator": "#685B56",
      "icons": "#D7CDCD",
      "icons_attention": "#C7E5DF",
      "ntp_text": "#D7CDCD",
      "sidebar": "#1C1619",
      "sidebar_text": "#D7CDCD",
      "sidebar_highlight": "#FF582D",
      "sidebar_highlight_text": "#1C1619",
      "sidebar_border": "#4D4441",
      "button_background_hover": "#333030",
      "popup": "#1C1619",
      "popup_text": "#D7CDCD",
      "popup_highlight": "#7F2C10",
      "popup_highlight_text": "#FFFFFF",
      "popup_border": "#262020"
    }
  },
  "name": "Blood Orange (Dark)",
  "author": "Yuki Hiroto",
  "manifest_version": 2,
  "version": "1.22",
  "description": "Dark theme for Firefox and those who hate blue."
}