Examine source code of YelLowProfile

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "YelLOW",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(252, 220, 77)",
      "toolbar_text": "rgb(5, 5, 5)",
      "frame": "rgb(252, 220, 77)",
      "tab_background_text": "rgb(5, 5, 5)",
      "toolbar_field": "rgb(245, 241, 227)",
      "toolbar_field_text": "rgb(5, 5, 5)",
      "tab_line": "rgb(245, 241, 227)",
      "popup": "rgb(245, 241, 227)",
      "popup_text": "rgb(5, 5, 5)",
      "tab_loading": "rgb(245, 241, 227)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fd1c4f11-9718-43ff-b165-cd7ececa4a35}"
    }
  }
}