Examine source code of Very Peri

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Very Peri",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(102, 103, 171)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(75, 76, 147)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(87, 88, 164)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(102, 103, 171)",
      "popup": "rgb(72, 73, 132)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(102, 103, 171)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{050069e1-ee4f-4f4d-87e3-6fdad9f3c807}"
    }
  }
}