Examine source code of weird theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "weird theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(11, 11, 11)",
      "toolbar_text": "rgb(60, 209, 217)",
      "frame": "rgb(38, 28, 37)",
      "tab_background_text": "rgb(60, 199, 90)",
      "toolbar_field": "rgb(27, 15, 33)",
      "toolbar_field_text": "rgb(137, 55, 245)",
      "tab_line": "rgb(255, 192, 203)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(130, 25, 202)",
      "tab_loading": "rgb(255, 192, 203)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3a9bf006-70a7-4f3e-9a3e-93f8e29f5f1c}"
    }
  }
}