Examine source code of Mint Legacy Dark Red

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mint Legacy Dark Red",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(53, 53, 53)",
      "toolbar_text": "rgb(240, 240, 240)",
      "frame": "rgb(40, 38, 38)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(53, 53, 53)",
      "toolbar_field_text": "rgb(240, 240, 240)",
      "tab_line": "rgb(179, 90, 87)",
      "popup": "rgb(43, 43, 43)",
      "popup_text": "rgb(240, 240, 240)",
      "button_background_active": "rgb(130, 66, 64)",
      "button_background_hover": "rgb(179, 90, 87)",
      "ntp_background": "rgb(53, 53, 53)",
      "ntp_text": "rgb(240, 240, 240)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(179, 90, 87)",
      "sidebar_text": "rgb(219, 219, 219)",
      "tab_loading": "rgb(179, 90, 87)",
      "toolbar_field_border_focus": "rgb(179, 90, 87)",
      "toolbar_field_border": "rgb(179, 90, 87)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{feaeb302-e17a-4211-be7c-c466cbfd256e}"
    }
  }
}