Examine source code of Phantomy

{
  "name": "Phantomy ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "setyaki-irham-QGDsM8qwkEA-unsplash.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6cd1f398-2116-458b-a34f-bf107314b8c2}"
    }
  }
}