Examine source code of Amazon Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "unadorned_deep_green",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(31, 37, 22)",
      "toolbar_text": "rgba(171, 183, 116, 0.75)",
      "frame": "rgb(31, 37, 22)",
      "tab_background_text": "rgb(135, 139, 135)",
      "toolbar_field": "rgba(60, 63, 46, 0.4)",
      "toolbar_field_text": "rgb(115, 132, 115)",
      "tab_line": "rgba(171, 183, 116, 0.5)",
      "popup": "rgb(60, 63, 46)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_loading": "rgba(171, 183, 116, 0.5)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a06bb2a-6299-4dbc-bc59-ace00140486e}"
    }
  }
}