Examine source code of An Arctic Midnight

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "An Arctic Midnight",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(58, 78, 105)",
      "toolbar_text": "rgb(240, 244, 250)",
      "frame": "rgb(41, 55, 74)",
      "tab_background_text": "rgb(206, 211, 219)",
      "toolbar_field": "rgb(41, 55, 74)",
      "toolbar_field_text": "rgb(234, 239, 247)",
      "tab_line": "rgb(120, 185, 255)",
      "popup": "rgb(49, 66, 89)",
      "popup_text": "rgb(234, 239, 247)",
      "button_background_active": "rgb(78, 101, 130)",
      "button_background_hover": "rgb(78, 101, 130)",
      "icons_attention": "rgb(255, 191, 127)",
      "icons": "rgb(234, 239, 247)",
      "ntp_background": "rgb(41, 55, 74)",
      "ntp_text": "rgb(234, 239, 247)",
      "popup_highlight_text": "rgb(240, 244, 250)",
      "popup_highlight": "rgb(78, 101, 130)",
      "sidebar_highlight_text": "rgb(240, 244, 250)",
      "sidebar_highlight": "rgb(78, 101, 130)",
      "sidebar_text": "rgb(234, 239, 247)",
      "sidebar": "rgb(49, 66, 89)",
      "tab_selected": "rgb(78, 101, 130)",
      "tab_text": "rgb(234, 239, 247)",
      "toolbar_field_border_focus": "rgb(255, 191, 127)",
      "toolbar_field_focus": "rgb(49, 66, 89)",
      "tab_loading": "rgb(120, 185, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c355102-a0ff-4c80-9b1e-f12a15dee5b6}"
    }
  }
}