Examine source code of Dark Mode Yellow

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "DarkModeYellow",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(57, 62, 70)",
      "toolbar_text": "rgb(255, 211, 105)",
      "frame": "rgb(34, 40, 49)",
      "tab_background_text": "rgb(238, 238, 238)",
      "toolbar_field": "rgb(255, 211, 105)",
      "toolbar_field_text": "rgb(34, 40, 49)",
      "tab_line": "rgb(255, 211, 105)",
      "popup": "rgb(34, 40, 49)",
      "popup_text": "rgb(238, 238, 238)",
      "tab_loading": "rgb(255, 211, 105)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{33b0ac4e-c936-4e14-bbac-739c5c62e3e3}"
    }
  }
}